action
coming
At a glance
In short
Bo is come. It looks to the destination, and Rabbi Shlomo Pappenheim explains that it covers both the arrival and the journey there. Lech is go. Just how the pair divides is not settled. The pattern the Tosafists observe in the makkos pesukim seems to suggest that bo somehow implies entering where lech does not. Rabbi Klein offers two theories of his own: that bo fixes on the destination and lech on the place of departure, or else that biah names any change of place, however it came about, and halichah specifically the act of walking. He adds that a concordance would have to be consulted to see how well any of these theories pans out. Atah is arrive: like bo it faces the destination, but it names only the arrival and never the journey (Rabbi Pappenheim, cited by Malbim). Bo and atah are not interchangeable.
Distinctions
Bo / biah (בוא, ביאה)
The Tosafists (Baal HaTurim to Shemos 10:1, Hadar Zekeinim to Shemos 9:1, Moshav Zekeinim to Shemos 10:1) observe a pattern in the makkos: when Hashem sends Moshe to Pharaoh in his palace He says bo el Pharaoh, and when He sends him to Pharaoh at the river He says lech el Pharaoh. This seems to suggest that bo somehow implies going inside a building, while lech implies going somewhere but not necessarily inside (see also Ramban to Shemos 8:15). The same idea seems to be echoed by the Zohar (Bo 34a), which reads bo el Pharaoh as Hashem bringing Moshe into some sort of Heavenly Inner Chamber somehow bound up with the sea-creature that characterized Egypt; that mystical reading too seems to presume that bo implies entering and lech does not.
Rabbi Elimelech of Lizhensk offers two further distinctions: bo implies coming to Pharaoh repeatedly, lech a single occasion; and bo implies coming willingly, while lech is the bare physical act, which can be done against one's will.
Etymologically, l'havi ("to bring") is a conjugation of bo, since bringing a thing is causing it to come; on that basis Rabbi Yaakov Tzvi Mecklenburg suggests reading bo el Pharaoh as "bring [the following message] to Pharaoh." Rabbi Shlomo Pappenheim derives navi from the same two-letter root ב-א, since a navi brings Hashem's words to his listeners. Rabbi Pappenheim adds that biah covers both reaching the destination ("I came home") and the approach to it ("I am coming home"). Hence Rachel is described as "coming" while still on her way to the well (Bereishis 29:9), and Yosef as "coming" while his brothers still saw him from afar (Bereishis 37:19).
- Rabbi Pappenheim and Rabbi Aharon Marcus take bo back to the single letter ב, "inside," the same sense the letter carries as a non-root prefix: one who comes to a place goes inside it and stops coming, because he has arrived, even though bo/biah can still be used of him while he is on the way. Rabbi Klein adds that this may perhaps give a better understanding of the Tosafists' and the Zohar's assumption that bo implies going inside.
- Rav Hirsch similarly connects bo to the phonetically similar po ("here") through the interchange of beis and peh: bo fixes on the final destination as po fixes on the present location, and he adds peh ("mouth"), the terminus into which food is destined to go.
The Baal HaTurim also reads bo as a gematria of three, alluding to the three makkos remaining. Rabbi Menachem Mendel Kasher answers that this cannot be why the Torah chose the word, since bo is used for Moshe going to Pharaoh twice more (Shemos 7:26, 9:1) when three makkos did not remain.
Lech / halichah (הלך, הליכה)
The counterpart term throughout: on the Tosafists' reading, simply going somewhere without the sense of entering; on Rabbi Elimelech's, without repetition and without any implication of willingness. Rabbi Klein offers two theories of his own, the first as an English speaker's temptation rather than as a finding.
- First, that bo and lech answer to English "come" and "go": bo fixes primarily on one's destination ("come to"), lech on one's place of departure ("go from").
- Alternatively, one could argue that biah denotes a change of place however it came about, while halichah denotes specifically the act of walking.
Rabbi Klein adds that a Biblical concordance would have to be consulted to see how well any of these theories pans out.
Azal, in the sense of going, appears four times in Hebrew passages of Tanach (Devarim 32:36, Shmuel I 9:7, Iyov 14:11, Mishlei 20:14) and seven times in Aramaic ones (Daniel 2:17, 2:24, 6:19-20; Ezra 5:8, 4:23, 5:15). The Targumim typically render lech/halichah and its cognates by azal, and generally render bo/biah by atah, or, where it means entering, by al/alil. Rabbi Eliyahu HaBachur notes an exception: where lech is in the imperative, the Targum sometimes renders it atah instead of azal (see Melachim II 10:16, Bereishis 37:27). Lech el Pharaoh (Shemos 7:15), though, the Targum renders with a form of azal.
Atah (אתה)
A biblical word for coming (Devarim 33:2, Yeshayahu 21:12), appearing in both the Hebrew and the Aramaic portions of Tanach.
- Rabbi Pappenheim: atah is a coming with more finality. Like bo it is oriented to the destination, but unlike bo it refers only to arriving, never to the journey there. The Malbim (Yair Ohr) cites this distinction between bo and atah in Rabbi Pappenheim's name.
- Of Devarim 33:2, where Hashem ba from Sinai and atah from the holy multitudes, the commentators explain that the two words are synonymous but from two languages, ba Hebrew and atah Aramaic, the Torah using an Aramaic word there to allude to Hashem's having first offered the Torah to the other nations before giving it to the Jews.
Rabbi Pappenheim derives atah from the single letter ת, which stands for bordering, since it closes the aleph-beis. A border links two bodies and distinguishes them at once; hence es, the particle that links a verb to its object and sometimes means "with," and os ("sign"), which links sign to signified. Atah on this reading is the traveler finally joined to his destination, as against biah, which can still have him on the road. Rabbi Pappenheim likens the difference between biah and atah to that between kiruv and gishah (see approach). Rabbi Klein adds a suggestion of his own: perhaps the finality of atah is hinted in its root's being the first and last letters of the aleph-beis, while biah has the first and the second. The same root yields tav ("mark"), which serves as a border distinguishing a thing from the rest: Yechezkel saw Hashem command an angel to make a tav on the foreheads of the righteous who bemoaned the abominations in Yerushalayim, which the Gemara (Shabbos 55a) explains to mean writing the letter tav on them, and the os given to Kayin (Bereishis 4:15) is what some explain to be that same letter. The letter tav thus plays not only a semantic role but a semiotic one, as a symbol or sign (see Dr. Chaim Tawil's explanation of the order of the nations in Amos's prophecy as meant to form an x). In the original Ivri script the letter tav was written in the shape of the English letter x (and the Greek chi), and Rabbi Klein draws the parallel: as X marks the spot and stands for what is missing, as in algebra, the tav too marks a thing off as distinguished.
Also discussed in
- Leadingהולך / מוליך (ה-ל-ך)
- Signאתה / אות (א-ת-ה, and Pappenheim's ת)
- Synonyms: the methodאתה (atah), Devarim 33:2
Radak on these roots
Sefer HaShorashim
א-ת-ה
To come. The sense of every form is coming, as the Targum renders ויבא, and he came, as וַאֲתָא.
How the forms run
אָתָא בֹקֶר וְגַם־לָיְלָה (Yeshayahu 21:12), morning comes and night too, and עָדֶיךָ תֵאתֶה (Michah 4:8), it will come to you, have the alef at rest; מִצָּפוֹן זָהָב יֶֽאֱתֶה (Iyov 37:22), gold comes out of the north, and כְּסוּפָה יֶֽאֱתֶה (Mishlei 1:27), it comes like a storm, have it sounded. In הַעִירוֹתִי מִצָּפוֹן וַיַּאת (Yeshayahu 41:25), I roused one from the north and he came, the last root letter has dropped; and in וַיֵּתֶא רָאשֵׁי עָם (Devarim 33:21), and he came, the heads of the people, the alef stands for the heh that is the last root letter.
The things to come
הָאֹֽתִיּוֹת שְׁאָלוּנִי (Yeshayahu 45:11), ask Me of the things to come, and הַגִּידוּ הָאֹֽתִיּוֹת לְאָחוֹר (Yeshayahu 41:23), tell what is to come hereafter. In these the last root letter shows itself turned into a yud, as it does in קָֽרְבוּ וַיֶּאֱתָיֽוּן (Yeshayahu 41:5), they drew near and came, and in כִּי פַחַד פָּחַדְתִּי וַיֶּאֱתָיֵנִי (Iyov 3:24 in his edition), what I feared has come upon me.
Come, with a heh for the alef
אֵתָיוּ אֶקְחָה־יַיִן (Yeshayahu 56:12), come, let me fetch wine; and with a heh in place of the alef that is the first root letter, הֵתָיוּ לְאָכְלָֽה (Yirmiyahu 12:9), come to devour, and לִקְרַאת צָמֵא הֵתָיוּ מָיִם (Yeshayahu 21:14), which he reads as telling the waters to come toward the thirsty man, the one wandering from his place before the sword.
אָתָא בֹקֶר וְגַם־לָיְלָה (ישעיה כא, יב) וְאָתָה מֵרִֽבְבֹת קֹדֶשׁ (דברים לג, ב), עָדֶיךָ תֵאתֶה (מיכה ד, ח), בנוח האל"ף. וכנועה, מִצָּפוֹן זָהָב יֶֽאֱתֶה (איוב לז, כב), כְּסוּפָה יֶֽאֱתֶה (משלי א, כז). ובחסרון למ"ד הפעל ונוח האל"ף הַעִירוֹתִי מִצָּפוֹן וַיַּאת (ישעיה מא, כה). ונקרא כבעלי האל"ף, הִנְנוּ אָתָנוּ (ירמיה ג, כב). הָאֹֽתִיּוֹת שְׁאָלוּנִי (ישעיה מה, יא), הַגִּידוּ הָאֹֽתִיּוֹת לְאָחוֹר (ישעיה מא, כג), וְאֹתִיּוֹת וַֽאֲשֶׁר תָּבֹאנָה (ישעיה מד, ז), קָֽרְבוּ וַיֶּאֱתָיֽוּן (ישעיה מא, ה), כִּי פַחַד פָּחַדְתִּי וַיֶּאֱתָיֵנִי (איוב ג, כד). בכלם נראת בהם למ"ד הפעל שהומרה ביו"ד, וַיֵּתֶא רָאשֵׁי עָם (דברים לג, כא), משפטו וַיֶּֽאֱתֶה והאל"ף במקום ה"א למ"ד הפעל. אֵתָיוּ לֶאֱכֹל כָּל־חַיְתוֹ בַּיָּֽעַר (ישעיה נו, ט), אֵתָיוּ אֶקְחָה־יַיִן (ישעיה נו, יב), שֻׁבוּ אֵתָֽיוּ (ישעיה כא, יב). והומרה האל"ף פ"א הפעל בה"א הֵתָיוּ לְאָכְלָֽה (ירמיה יב, ט), לִקְרַאת צָמֵא הֵתָיוּ מָיִם (ישעיה כא, יד), פירוש אומר למים שיבאו לקראה הצמא, והוא הנודד ממקומו מפני החרב, וענין כלם ענין ביאה כתרגום ויבא וַאֲתָא.
ה-ל-ך
To go and to walk, the sense of every form, he says, being known; its nouns include הֲלִיכָה, a going, מַהֲלַךְ יוֹם, a day's walk, and הֵלֶךְ, a traveller.
Going
הֹלֵךְ לִקְרָאתְךָ (Bereishis 32:7), going to meet you, and וַתִּהֲלַךְ אֵשׁ (Shemos 9:23), and fire went. The noun is הֲלִיכָה, a going, with the plural הֲלִיכוֹת עוֹלָם לוֹ (Chavakuk 3:6), the everlasting goings are His.
A day's walk, and the traveller
מַהֲלַךְ יוֹם (Yonah 3:4), a day's walk; and הֵלֶךְ, a traveller, וַיָּבֹא הֵלֶךְ לְאִישׁ הֶעָשִׁיר (Shmuel II 12:4), a traveller came to the rich man. וְתַהֲלֻכֹת לַיָּמִין מֵעַל לַחוֹמָה (Nechemyah 12:31), and תַּהֲלֻכֹת to the right, above the wall, he takes as a describing word: they were going to the right of the wall.
Walking before Hashem
הִתְהַלֵּךְ לְפָנַי וֶהְיֵה תָמִים (Bereishis 17:1), walk before Me and be whole, as of Noach (Bereishis 6:9) and of the avos, אֲשֶׁר הִתְהַלְּכוּ אֲבֹתַי לְפָנָיו (Bereishis 48:15), before whom my fathers walked. Walking here, he says, means occupying oneself in the service of Hashem.
הָלַךְ בְּדֶרֶךְ מֵרָחֽוֹק (משלי ז, יט) הֹלֵךְ לִקְרָֽאתְךָ (בראשית לב, ז), לָמָּה לֹֽא־הָלַכְתָּ אֵלָי (במדבר כב, לז), פְּלֵטִים מֵחֶרֶב הִלְכוּ אַל־תַּֽעֲמֹדוּ (ירמיה נא, נ), הֵן קֶדֶם אֶהֱלֹךְ (איוב כג, ח), מִפִּיו לַפִּידִים יַֽהֲלֹכוּ (איוב מא, יא), וַתִּֽהֲלַךְ־אֵשׁ (שמות ט, כג), וּלְשׁוֹנָם תִּֽהֲלַךְ בָּאָֽרֶץ (תהלים עג, ט). והשם בה"א הנקבה הֲלִיכָה, יִכָּֽשְׁלוּ בַּֽהֲלִֽכָותָם [בַּֽהֲלִֽיכָתָם] (נחום ב, ו). והקבוץ הֲלִיכוֹת עוֹלָם לֽוֹ (חבקוק ג, ו), הֲלִיכֹת שְׁבָא (איוב ו, יט), צוֹפִיָּה הֲֽילִכוֹת [הֲֽלִיכוֹת] בֵּיתָהּ (משלי לא, כז), הֲלִיכוֹת אֵלִי (תהלים סח, כה). ובלא ה"א הנקבה הֲלִיךְ, בִּרְחֹץ הֲלִיכַי בְּחֵמָה (איוב כט, ו). ומשקל אחר הֵלֶךְ דְּבָשׁ (שמואל א' יד, כו), בחמש נקודות. ובתוספת מ"ם מַֽהֲלַךְ יוֹם (יונה ג, ד), וְנָתַתִּי לְךָ מַהְלְכִים (זכריה ג, ז), בפלס בְמַסְמְרִים (ישעיה מא, ז). ושם התאר וַיָּבֹא הֵלֶךְ לְאִישׁ הֶֽעָשִׁיר (שמואל ב' יב, ד), בחמש נקדות. ובתוספת תי"ו עם ה"א הנקבה תַּֽהֲלוּכָה, וְתַֽהֲלֻכֹת לַיָּמִין מֵעַל לַחוֹמָה (נחמיה יב, לא), בפלס וְאֵת בְּנֵי הַתַּֽעֲרֻבוֹת (מלכים ב' יד, יד), והוא תאר כלומר היו הולכות לימין החומה. והנפעל כְּצֵל כִּנְטוֹתוֹ נֶהֱלָכְתִּי (תהלים קט, כג). והפעל הכבד שאינו עובר וְלֹֽא־הִלַּכְתִּי בִּגְדֹלוֹת (תהלים קלא, א), קֹדֵר הִלַּכְתִּי בְּלֹא חַמָּה (איוב ל, כח), כָּל־הַיּוֹם קֹדֵר הִלָּֽכְתִּי (תהלים לח, ז), לְאוֹר חִצֶּיךָ יְהַלֵּכוּ (חבקוק ג, יא), בְּבֵית אֱלֹהִים נְהַלֵּךְ בְּרָֽגֶשׁ (תהלים נה, טו), אִם־יְהַלֵּךְ אִישׁ עַל־הַגֶּֽחָלִים (משלי ו, כח), בְּחֻקּוֹתַי יְהַלֵּךְ וּמִשְׁפָּטַי שָׁמַר (יחזקאל יח, ט), וַיִּשְׁכַּב בַּשָּׂק וַיְהַלֵּךְ אַֽט (מלכים א' כא, כז). והעובר עָרוֹם הִלְּכוּ בְּלִי לְבוּשׁ (איוב כד, י), בְּאֹרַח צְדָקָה אֲהַלֵּךְ (משלי ח, כ). ויתכן להיות גם כן צֶדֶק לְפָנָיו יְהַלֵּךְ (תהלים פה, יד), עובר. וההתפעל את האלהים הִתְהַלֵּךְ נח (בראשית ו, ט), הִתְהַלֵּךְ לְפָנַי וֶהְיֵה תָמִֽים (בראשית יז, א), אֲשֶׁר הִתְהַלְּכוּ אֲבֹתַי לְפָנָיו (בראשית מח, טו), רוצה לומר התעסקות בעבודת השם יתברך. וכן וְהִתְהַלַּכְתִּי בַּֽאֲמִתֶּֽךָ (תהלים כו, ג), וענין כלם ידוע.
Radak, Sefer HaShorashim, Berlin 1847. Public domain, digitised by Sefaria from the National Library of Israel.
Rav Pappenheim on this root
Cheshek Shlomo
ב-א
In English, our account of his entry
Coming: joining the fixed goal one moves toward, the opposite of going out. From ב, the letter of attachment, it holds both the motion to a place and the arrival in it.
Coming needs a fixed goal
Coming is joining the boundary one is heading for, the opposite of going out (יציאה), which is parting from a boundary. It is a relative term, said only with respect to the boundary that is its end, and only where that boundary is fixed and stays in its place. Where it is not fixed, one cannot say of the one coming that his coming is complete: one may say that he drew near or approached (שקרב או נגש), but not that he came. Where it is fixed, בא is said even while he is still on the way, since he must reach it in the end: והנה עשו בא (Bereishis 33:1), and behold, Esav was coming, though he had not yet arrived; as he draws ever nearer to the fixed point, we see it as though the coming were already complete. And ביאה, coming, is said only of one who, having reached the boundary he sought, stops moving; of one who is still in motion it is not clear that the coming is complete.
The sun comes only when it sets
So בא is said of the sun only at its setting, כי בא השמש (Bereishis 28:11), for the sun had come in, and not at its rising. From where we stand it would fit the sunrise better, since we are the boundary and the sun comes toward us; but after rising it is still in motion and does not rest, so ביאה, coming, does not apply to it. When it sets and we no longer see it moving, we may say כי באה, for it has come, as though it had found the point it sought on the western horizon and come to rest there.
מבוא and מבוי, the entry
The noun of place is מבוא, an entry: מבוא השמש (Devarim 11:30), the going in of the sun, and מבוא העיר (Shoftim 1:24), the entry of the city. In the language of Chazal it is מבוי, as מבוי שהוא גבוה (Eruvin), an alley that is high, on the pattern of ראוי, fit, and מצוי, found; in the plural מבואות, as שתופי מבואות (Eruvin 79b), the partnerships of the alleys. A מבוי, then, is the entry of the street: not the street itself, though it takes in both; what is meant is the open space of the street through which one comes into the houses and courtyards.
To bring, and the verb's other forms
The verb of bringing is הביא, he brought, and מובא, brought: כי הובאו בית יוסף (Bereishis 43:18), that they had been brought into Yosef's house, that is, made to come by another. The verb is never found in the simple passive, so that it should not be confused with נביא, prophet, and נבואה, prophecy. It comes without its alef, ויבו ירבעם (Melachim I 12:12), and Yeravam came, and הנני מבי עליך (Melachim I 21:21), behold, I am bringing upon you; and with a tav added, תבואתה לראש יוסף (Devarim 33:16), let it come upon the head of Yosef, and תבואתך טובה (Iyov 22:21), good will come to you.
תבואה, produce
From the root comes תבואה, what the ground grows, grain and the fruit of trees alike: כתבואת גרן וכתבואת יקב (Bamidbar 18:30), as the yield of the threshing floor and as the yield of the winepress. It is named for the bringing forth that the earth brings. It is a noun of the verb, but not of the simple form, since it does not speak of coming; it is of the causative, which speaks of bringing. The sense is that of יבול, what the earth carries forth; see his explanation at the root בל. It is said also of the fruit of thought and deed: ותבואתי מכסף נבחר (Mishlei 8:19), and my yield is better than choice silver; תבואת רשע לחטאת (Mishlei 10:16), the yield of the wicked is for sin; תבואת שפתיו ישבע (Mishlei 18:20), with the yield of his lips he is sated.
Whoever loves a crowd has no yield
ומי אוהב בהמון לא תבואה (Koheles 5:9), and whoever loves a crowd has no yield: the one who loves a crowd of workers to do his work, for some people love bustle and like their affairs run on a large scale. Such a man never makes a profit and gains nothing from the many hands, for ברבות הטובה רבו אוכליה (Koheles 5:10), when good increases, those who eat it increase, and his wage goes out in his loss: as the good grows with the number of workers, so grows the need to feed and keep them. The householder has no advantage כי אם ראות עיניו, but the sight of his eyes: many people reclining at his table and his house in a tumult. Better to have few workers and to work alongside them himself, for מתוקה שנת העובד (Koheles 5:11), sweet is the sleep of the worker, who enjoys the toil of his hands, whether much or little. Not so the rich man who slackens in the work because he relies on his many workers: though his provisions are plentiful, his sleep is confused and troubled.
נביא, the one who brings words
From בא in the sense of bringing comes the noun נביא, prophet, on the pattern of נשיא, prince, and נזיר, nazirite. He is the messenger who brings the words of Hashem to the people and the words of the people to Hashem, and he is called נביא for this bringing of words, as it says והבאת אתה את הדברים אל האלהים (Shemos 18:19), and you shall bring the matters to Hashem. That is the chief condition of a prophet: that he stand so high that Hashem attends to him, makes him His messenger to tell the people His words, and receives the people's words through him. Working signs and wonders beyond nature, and knowing the future, are incidental to a prophet, for times when the hour requires them, and are not a necessary condition: many prophets prophesied of whom no miracles or foretelling became known. וידע כל ישראל כי נאמן שמואל לנביא (Shmuel I 3:20), and all Yisrael knew that Shmuel was established as a prophet, when he had not yet worked any wonder; they knew he was a prophet because Hashem had revealed Himself to him.
Aharon, and prophecy in song
ואהרן אחיך יהיה נביאך (Shemos 7:1), and Aharon your brother shall be your prophet: the one who brings your words to Pharaoh, as a prophet brings the words of Hashem to the people, so that you are in My place and he in yours. And of the one who prophesied at the king's direction, הניבא על ידי המלך, it says הנבא על הודות והלל (Divrei HaYamim I 25:2-3), who prophesied in thanksgiving and praise: that is, who brought through songs the words of the king, and words of thanksgiving and praise to Hashem.
Why foretelling is called נבואה
Telling the future is also called נבואה, prophecy, because it is found only among prophets and not among ordinary men. Hashem reveals His secret only to His servants the prophets (Amos 3:7), and works signs and wonders only through them, so that it should be clear to every challenger that they are His messengers, or to warn the people and set them straight in His ways.
נביא and רואה, prophet and seer
In time people made the secondary thing the main one, held that a prophet's chief distinction was to see what is to come, and called the prophet רואה, seer. This was in the days of the Judges, when over the years the principle the nation had received from of old was shaken: that the condition of a prophet is his mission and not foretelling. Thinking foretelling the main thing, they set aside the name נביא, which speaks of bringing the mission, and called him רואה, for the seeing of the future. So כי לנביא היום יקרא לפנים הרואה (Shmuel I 9:9), for the one now called a prophet was formerly called a seer. היום, today, refers to the time Shmuel wrote his book, at the end of his life, when the name רואה had fallen away again and נביא had been chosen again as at first. Writing then, Shmuel was saying: what I now call a prophet, by the true name it had in early days, was called before, in the days of the Judges and in the years of my youth as well, a seer.
The root is the letter ב
In the word בא the only root letter is ב, and the alef is added: it is missing in the forms above and in ויכל מהתנבות (Shmuel I 10:13), and he finished prophesying. The letter ב in itself marks the cleaving of a quality (מקרה) to the thing that bears it (נושא), that is, the boundary it is in: בי, בהם, בכם, in me, in them, in you. Since there are many ways for a quality to cleave to its bearer, ב has many uses.
From birth, arising, from outside
Some qualities cleave from the start, as heat to fire and wetness to water, from their creation: יהיה בו מום (Vayikra 21:17), who has a blemish in him, and או תבלול בעינו (Vayikra 21:20), or a film in his eye. Some arise anew, as flowing in water that is sometimes still and sometimes running: כי יהיה בו שבר רגל (Vayikra 21:19), who has a broken leg, for the break is not from his creation. What arises may come about in place, as flowing within the water itself: כי פשה הנגע בבית (Vayikra 14:48), that the plague has spread in the house; ושער שחור צמח בו (Vayikra 13:37), and black hair has grown in it; ויהי רעב בארץ (Bereishis 12:10), and there was famine in the land. Or it may come upon the bearer from outside, as warmth comes upon water: כאשר יתן מום באדם כן ינתן בו (Vayikra 24:20), as he put a blemish in a man so shall it be put in him; ורחץ במים (Vayikra 14:8), and he shall wash in water; ודבק באשתו (Bereishis 2:24), and he shall cleave to his wife. What comes from outside sometimes comes through a means, as rinsing is done by means of water: ומורק ושטף במים (Vayikra 6:21), it shall be scoured and rinsed in water; מיד האמורי בחרבי ובקשתי (Bereishis 48:22), from the hand of the Emori with my sword and my bow; and this is what is called the ב of the instrument.
Within, leaning, company, time
Some cleaving arises inside the bearer: והשוכב בבית (Vayikra 14:47), and one who lies in the house; בבית ובשדה (Bereishis 39:5), in the house and in the field; ובדרך לא היה (Bamidbar 9:13), and was not on the road. Some is by leaning on it: לא בקשתי אבטח (Tehillim 44:7), not in my bow do I trust; הנוגע בהר (Shemos 19:12), whoever touches the mountain. Some is by company: כי במקלי עברתי את הירדן (Bereishis 32:11), for with my staff I crossed the Yarden; בזאת יבא אהרן (Vayikra 16:3), with this shall Aharon come. Some is in time, either the time itself, בעת ההיא (Yehoshua 5:2), at that time, בימים ההם (Bereishis 6:4), in those days, ויכל אלהים ביום השביעי (Bereishis 2:2), and Hashem finished on the seventh day; or through some act in between, ובלכתך בדרך ובשכבך ובקומך (Devarim 6:7), and as you walk on the way, and as you lie down and as you rise, and ובמלאות ימי טהרה (Vayikra 12:6), and when the days of her purity are complete. The act in between may mark the time by chance, as בשכון ישראל (Bereishis 35:22), when Yisrael dwelt, וברדת הטל (Bamidbar 11:9), and when the dew came down, and בשבתך בביתך (Devarim 6:7), when you sit in your house; or be bound to the time necessarily, as ובשכבך ובקומך (Devarim 6:7), at the hour people lie down; בעלותך לראות (Shemos 34:24), when you go up to appear; באכלכם מלחם הארץ (Bamidbar 15:19), when you eat of the bread of the land; באין אלפים אבוס בר (Mishlei 14:4), where there are no oxen the trough is clean, that is, at a time when there are none; and התשחית בחמשה (Bereishis 18:28), will You destroy for the five, that is, at a time when five are lacking.
Joining in thought
Some cleaving is a joining of things in imagination and thought: בכסף מלא יתננה לי (Bereishis 23:9), for full silver let him give it to me, an imagined joining of the act of giving to the receipt of full silver; והנותר בבשר ובלחם (Vayikra 8:32), and what is left of the flesh and of the bread, where being left over is attached to the flesh and bread by a relation in thought. So too ותדבר מרים ואהרן במשה (Bamidbar 12:1), and Miriam and Aharon spoke against Moshe; ויעבד ישראל באשה (Hoshea 12:13), and Yisrael served for a wife; כפלים בכל חטאותיה (Yeshayahu 40:2), double for all her sins; בך ארוץ גדוד (Shmuel II 22:30), by You I run against a troop; לדבקה בו (Devarim 11:22), to cleave to Him. All these, and many more, are the cleaving of a quality to its bearer: from the start or arising anew, from within the bearer itself or by coming from outside.
Two stages, ל and ב, make בא
A quality that comes from outside must pass two stages. First the motion, in which it moves to cleave to its bearer: the preparation and the act before the attachment. Then the attachment itself, the point of time at which it takes hold and is complete, the outcome of the motion before it. The letter ל marks the motion that comes before, which the logicians call מאמר לו, the category of to it, motion toward some point, matter or state; the letter ב marks the attachment once complete, which they call מאמר בו, the category of in it. German says both with its word for in: of one walking in the city, געהט אין דער שטאט, geht in der Stadt, he walks in the city, and of one going to the city, געהט אין דיא שטאט, geht in die Stadt, he goes into the city; it tells the two apart by the article, die or der, the word der, which Rav Pappenheim labels genitive, meaning the inside of the city. So ב serves for the cleaving of a quality to its bearer, from within or from outside, and from its use for what comes from outside the language made the word בא, to come: the verb that gathers both stages. Before the joining is complete the one coming is in motion toward the boundary he heads for, in the category of to it; once he has cleaved to that boundary he passes out of the category of to it into the category of in it, and the verb that holds both is called בא.
Rav Shlomo Pappenheim, Cheshek Shlomo (Shorashim), first printed from his manuscript by Moshe Tzuriel, Bnei Brak 5777. The English is our account of his entry.
Sources
Rabbi Reuven Chaim Klein, "Bo: Come To Pharaoh," What's in a Word?, Ohr Somayach, 23 January 2021.
Rabbi Reuven Chaim Klein, "Introduction: Synonyms in the Hebrew Language," What's in a Word?, Ohr Somayach, 25 June 2016.
Rabbi Reuven Chaim Klein, "Come To Pharaoh," What's in a Word? Synonyms in the Hebrew Language (book manuscript).
Cited in the essay: Shemos 10:1, 7:26, 9:1, 8:15, 7:15; Bereishis 29:9, 37:19, 4:15, 37:27; Devarim 33:2, 32:36; Yeshayahu 21:12; Shmuel I 9:7; Melachim II 10:16; Iyov 14:11; Mishlei 20:14; Daniel 2:17, 2:24, 6:19-20; Ezra 5:8, 4:23, 5:15; Zohar Bo 34a; Shabbos 55a; Ramban to Shemos 8:15; Baal HaTurim, Hadar Zekeinim, and Moshav Zekeinim on the makkos pesukim; Rabbi Elimelech of Lizhensk; Rabbi Yaakov Tzvi Mecklenburg; Rabbi Shlomo Pappenheim; Rabbi Aharon Marcus; Rav Hirsch; Rabbi Menachem Mendel Kasher; Malbim, Yair Ohr; the Targumim; Rabbi Eliyahu HaBachur; Dr. Chaim Tawil on the order of the nations in Amos.