Set in Stone, Carried in Wood: The Ten Commandments and the Ark After the Sin of the Golden Calf
I. Moshe at Sinai after the Golden Calf: The Telling and Retelling
(יב) וַיֹּ֨אמֶר מֹשֶׁ֜ה אֶל־ה׳ רְ֠אֵ֠ה אַתָּ֞ה אֹמֵ֤ר אֵלַי֙ הַ֚עַל אֶת־הָעָ֣ם הַזֶּ֔ה וְאַתָּה֙ לֹ֣א הֽוֹדַעְתַּ֔נִי אֵ֥ת אֲשֶׁר־תִּשְׁלַ֖ח עִמִּ֑י... (יח) וַיֹּאמַ֑ר הַרְאֵ֥נִי נָ֖א אֶת־כְּבֹדֶֽךָ׃ (יט) וַיֹּ֗אמֶר אֲנִ֨י אַעֲבִ֤יר כׇּל־טוּבִי֙ עַל־פָּנֶ֔יךָ וְקָרָ֧אתִֽי בְשֵׁ֛ם ה׳ לְפָנֶ֑יךָ וְחַנֹּתִי֙ אֶת־אֲשֶׁ֣ר אָחֹ֔ן וְרִחַמְתִּ֖י אֶת־אֲשֶׁ֥ר אֲרַחֵֽם׃ (כ) וַיֹּ֕אמֶר לֹ֥א תוּכַ֖ל לִרְאֹ֣ת אֶת־פָּנָ֑י כִּ֛י לֹֽא־יִרְאַ֥נִי הָאָדָ֖ם וָחָֽי׃ (כא) וַיֹּ֣אמֶר ה׳ הִנֵּ֥ה מָק֖וֹם אִתִּ֑י וְנִצַּבְתָּ֖ עַל־הַצּֽוּר׃ (כב) וְהָיָה֙ בַּעֲבֹ֣ר כְּבֹדִ֔י וְשַׂמְתִּ֖יךָ בְּנִקְרַ֣ת הַצּ֑וּר וְשַׂכֹּתִ֥י כַפִּ֛י עָלֶ֖יךָ עַד־עׇבְרִֽי׃ (כג) וַהֲסִרֹתִי֙ אֶת־כַּפִּ֔י וְרָאִ֖יתָ אֶת־אֲחֹרָ֑י וּפָנַ֖י לֹ֥א יֵרָאֽוּ׃ {פ}(א) וַיֹּ֤אמֶר ה׳ אֶל־מֹשֶׁ֔ה פְּסׇל־לְךָ֛ שְׁנֵֽי־לֻחֹ֥ת אֲבָנִ֖ים כָּרִאשֹׁנִ֑ים וְכָתַבְתִּי֙ עַל־הַלֻּחֹ֔ת אֶ֨ת־הַדְּבָרִ֔ים אֲשֶׁ֥ר הָי֛וּ עַל־הַלֻּחֹ֥ת הָרִאשֹׁנִ֖ים אֲשֶׁ֥ר שִׁבַּֽרְתָּ׃ (ב) וֶהְיֵ֥ה נָכ֖וֹן לַבֹּ֑קֶר וְעָלִ֤יתָ בַבֹּ֙קֶר֙ אֶל־הַ֣ר סִינַ֔י וְנִצַּבְתָּ֥ לִ֛י שָׁ֖ם עַל־רֹ֥אשׁ הָהָֽר׃ (ג) וְאִישׁ֙ לֹֽא־יַעֲלֶ֣ה עִמָּ֔ךְ וְגַם־אִ֥ישׁ אַל־יֵרָ֖א בְּכׇל־הָהָ֑ר גַּם־הַצֹּ֤אן וְהַבָּקָר֙ אַל־יִרְע֔וּ אֶל־מ֖וּל הָהָ֥ר הַהֽוּא׃ (ד) וַיִּפְסֹ֡ל שְׁנֵֽי־לֻחֹ֨ת אֲבָנִ֜ים כָּרִאשֹׁנִ֗ים וַיַּשְׁכֵּ֨ם מֹשֶׁ֤ה בַבֹּ֙קֶר֙ וַיַּ֙עַל֙ אֶל־הַ֣ר סִינַ֔י כַּאֲשֶׁ֛ר צִוָּ֥ה ה׳ אֹת֑וֹ וַיִּקַּ֣ח בְּיָד֔וֹ שְׁנֵ֖י לֻחֹ֥ת אֲבָנִֽים׃ (ה) וַיֵּ֤רֶד ה׳ בֶּֽעָנָ֔ן וַיִּתְיַצֵּ֥ב עִמּ֖וֹ שָׁ֑ם וַיִּקְרָ֥א בְשֵׁ֖ם ה׳׃(ו) וַיַּעֲבֹ֨ר ה׳ ׀ עַל־פָּנָיו֮ וַיִּקְרָא֒ ה׳ ׀ ה׳ אֵ֥ל רַח֖וּם וְחַנּ֑וּן אֶ֥רֶךְ אַפַּ֖יִם וְרַב־חֶ֥סֶד וֶאֱמֶֽת׃ (ז)נֹצֵ֥ר חֶ֙סֶד֙ לָאֲלָפִ֔ים נֹשֵׂ֥א עָוֺ֛ן וָפֶ֖שַׁע וְחַטָּאָ֑ה וְנַקֵּה֙ לֹ֣א יְנַקֶּ֔ה פֹּקֵ֣ד ׀ עֲוֺ֣ן אָב֗וֹת עַל־בָּנִים֙ וְעַל־בְּנֵ֣י בָנִ֔ים עַל־שִׁלֵּשִׁ֖ים וְעַל־רִבֵּעִֽים׃ (ח) וַיְמַהֵ֖ר מֹשֶׁ֑ה וַיִּקֹּ֥ד אַ֖רְצָה וַיִּשְׁתָּֽחוּ׃ (ט) וַיֹּ֡אמֶר אִם־נָא֩ מָצָ֨אתִי חֵ֤ן בְּעֵינֶ֙יךָ֙ אדושם יֵֽלֶךְ־נָ֥א אדושם בְּקִרְבֵּ֑נוּ כִּ֤י עַם־קְשֵׁה־עֹ֙רֶף֙ ה֔וּא וְסָלַחְתָּ֛ לַעֲוֺנֵ֥נוּ וּלְחַטָּאתֵ֖נוּ וּנְחַלְתָּֽנוּ׃ (י) וַיֹּ֗אמֶר הִנֵּ֣ה אָנֹכִי֮ כֹּרֵ֣ת בְּרִית֒ נֶ֤גֶד כׇּֽל־עַמְּךָ֙ אֶעֱשֶׂ֣ה נִפְלָאֹ֔ת אֲשֶׁ֛ר לֹֽא־נִבְרְא֥וּ בְכׇל־הָאָ֖רֶץ וּבְכׇל־הַגּוֹיִ֑ם וְרָאָ֣ה כׇל־הָ֠עָ֠ם אֲשֶׁר־אַתָּ֨ה בְקִרְבּ֜וֹ אֶת־מַעֲשֵׂ֤ה ה׳ כִּֽי־נוֹרָ֣א ה֔וּא אֲשֶׁ֥ר אֲנִ֖י עֹשֶׂ֥ה עִמָּֽךְ׃
(12) Moses said to ה׳, “See, You say to me, ‘Lead this people forward,’ but You have not made known to me whom You will send with me... (18) He said, “Oh, let me behold Your Presence!” (19) And [God] answered, “I will make all My goodness pass before you, and I will proclaim before you the name ה׳, and the grace that I grant and the compassion that I show,” (20) continuing, “But you cannot see My face, for a human being may not see Me and live.” (21) And ה׳ said, “See, there is a place near Me. Station yourself on the rock (22) and, as My Presence passes by, I will put you in a cleft of the rock and shield you with My hand until I have passed by. (23) Then I will take My hand away and you will see My back; but My face must not be seen.” (1)ה׳ said to Moses: “Carve for yourself two tablets of stone like the first, and I will inscribe upon the tablets the words that were on the first tablets, which you shattered. (2) Be ready by morning, and in the morning come up to Mount Sinai and present yourself there to Me, on the top of the mountain. (3) No one else shall come up with you, and no one else shall be seen anywhere on the mountain; neither shall the flocks and the herds graze at the foot of this mountain.” (4) So Moses carved two tablets of stone, like the first, and early in the morning he went up on Mount Sinai, as ה׳ had commanded him, taking the two stone tablets with him. (5)ה׳ came down in a cloud—and stood with him there, proclaiming the name ה׳. (6)ה׳ passed before him and proclaimed: “!ה׳! ה׳ a God compassionate and gracious, slow to anger, abounding in kindness and faithfulness, (7) extending kindness to the thousandth generation, forgiving iniquity, transgression, and sin—yet not remitting all punishment, but visiting the iniquity of parents upon children and children’s children, upon the third and fourth generations.” (8) Moses hastened to bow low to the ground in homage, (9) and said, “If I have gained Your favor, O my lord, pray, let my lord go in our midst, even though this is a stiffnecked people. Pardon our iniquity and our sin, and take us for Your own!” (10) [God] said: I hereby make a covenant. Before all your people I will work such wonders as have not been wrought on all the earth or in any nation; and all the people who are with you shall see how awesome are ה׳’s deeds which I will perform for you.
(כה) וָֽאֶתְנַפַּ֞ל לִפְנֵ֣י ה׳ אֵ֣ת אַרְבָּעִ֥ים הַיּ֛וֹם וְאֶת־אַרְבָּעִ֥ים הַלַּ֖יְלָה אֲשֶׁ֣ר הִתְנַפָּ֑לְתִּי כִּֽי־אָמַ֥ר ה׳ לְהַשְׁמִ֥יד אֶתְכֶֽם׃ (כו) וָאֶתְפַּלֵּ֣ל אֶל־ה׳ וָאֹמַר֒ אדושם ה׳ אַל־תַּשְׁחֵ֤ת עַמְּךָ֙ וְנַחֲלָ֣תְךָ֔ אֲשֶׁ֥ר פָּדִ֖יתָ בְּגׇדְלֶ֑ךָ אֲשֶׁר־הוֹצֵ֥אתָ מִמִּצְרַ֖יִם בְּיָ֥ד חֲזָקָֽה׃ (כז) זְכֹר֙ לַעֲבָדֶ֔יךָ לְאַבְרָהָ֥ם לְיִצְחָ֖ק וּֽלְיַעֲקֹ֑ב אַל־תֵּ֗פֶן אֶל־קְשִׁי֙ הָעָ֣ם הַזֶּ֔ה וְאֶל־רִשְׁע֖וֹ וְאֶל־חַטָּאתֽוֹ׃ (כח) פֶּן־יֹאמְר֗וּ הָאָ֘רֶץ֮ אֲשֶׁ֣ר הוֹצֵאתָ֣נוּ מִשָּׁם֒ מִבְּלִי֙ יְכֹ֣לֶת ה׳ לַהֲבִיאָ֕ם אֶל־הָאָ֖רֶץ אֲשֶׁר־דִּבֶּ֣ר לָהֶ֑ם וּמִשִּׂנְאָת֣וֹ אוֹתָ֔ם הוֹצִיאָ֖ם לַהֲמִתָ֥ם בַּמִּדְבָּֽר׃ (כט) וְהֵ֥ם עַמְּךָ֖ וְנַחֲלָתֶ֑ךָ אֲשֶׁ֤ר הוֹצֵ֙אתָ֙ בְּכֹחֲךָ֣ הַגָּדֹ֔ל וּבִֽזְרֹעֲךָ֖ הַנְּטוּיָֽה׃ {פ}(א) בָּעֵ֨ת הַהִ֜וא אָמַ֧ר ה׳ אֵלַ֗י פְּסׇל־לְךָ֞ שְׁנֵֽי־לוּחֹ֤ת אֲבָנִים֙ כָּרִ֣אשֹׁנִ֔ים וַעֲלֵ֥ה אֵלַ֖י הָהָ֑רָה וְעָשִׂ֥יתָ לְּךָ֖ אֲר֥וֹן עֵֽץ׃ (ב) וְאֶכְתֹּב֙ עַל־הַלֻּחֹ֔ת אֶ֨ת־הַדְּבָרִ֔ים אֲשֶׁ֥ר הָי֛וּ עַל־הַלֻּחֹ֥ת הָרִאשֹׁנִ֖ים אֲשֶׁ֣ר שִׁבַּ֑רְתָּ וְשַׂמְתָּ֖ם בָּאָרֽוֹן׃ (ג) וָאַ֤עַשׂ אֲרוֹן֙ עֲצֵ֣י שִׁטִּ֔ים וָאֶפְסֹ֛ל שְׁנֵי־לֻחֹ֥ת אֲבָנִ֖ים כָּרִאשֹׁנִ֑ים וָאַ֣עַל הָהָ֔רָה וּשְׁנֵ֥י הַלֻּחֹ֖ת בְּיָדִֽי׃ (ד) וַיִּכְתֹּ֨ב עַֽל־הַלֻּחֹ֜ת כַּמִּכְתָּ֣ב הָרִאשׁ֗וֹן אֵ֚ת עֲשֶׂ֣רֶת הַדְּבָרִ֔ים אֲשֶׁ֣ר דִּבֶּר֩ ה׳ אֲלֵיכֶ֥ם בָּהָ֛ר מִתּ֥וֹךְ הָאֵ֖שׁ בְּי֣וֹם הַקָּהָ֑ל וַיִּתְּנֵ֥ם ה׳ אֵלָֽי׃ (ה) וָאֵ֗פֶן וָֽאֵרֵד֙ מִן־הָהָ֔ר וָֽאָשִׂם֙ אֶת־הַלֻּחֹ֔ת בָּאָר֖וֹן אֲשֶׁ֣ר עָשִׂ֑יתִי וַיִּ֣הְיוּ שָׁ֔ם כַּאֲשֶׁ֥ר צִוַּ֖נִי ה׳׃
(25) When I lay prostrate before ה׳ those forty days and forty nights, because ה׳ was determined to destroy you, (26) I prayed to ה׳ and said, “O Lord ה׳, do not annihilate Your very own people, whom You redeemed in Your majesty and whom You freed from Egypt with a mighty hand. (27) Give thought to Your servants Abraham, Isaac, and Jacob, and pay no heed to the stubbornness of this people, its wickedness, and its sinfulness. (28) Else the country from which You freed us will say, ‘It was because ה׳ was powerless to bring them into the land promised to them, and because of having rejected them, that [their god] brought them out to have them die in the wilderness.’ (29) Yet they are Your very own people, whom You freed with Your great might and Your outstretched arm.” (1) Thereupon ה׳ said to me, “Carve out two tablets of stone like the first, and come up to Me on the mountain; and make an ark of wood. (2) I will inscribe on the tablets the commandments that were on the first tablets that you smashed, and you shall deposit them in the ark.” (3) I made an ark of acacia wood and carved out two tablets of stone like the first; I took the two tablets with me and went up the mountain. (4) After inscribing on the tablets the same text as on the first—the Ten Commandments that ה׳ addressed to you on the mountain out of the fire on the day of the Assembly— ה׳ gave them to me. (5) Then I left and went down from the mountain, and I deposited the tablets in the ark that I had made, where they still are, as ה׳ had commanded me.
II. What Was the Purpose of Making the Ark?
ועשית לך ארון, וַאֲנִי עָשִׂיתִי אָרוֹן תְּחִלָּה, שֶׁכְּשֶׁאָבֹא וְהַלּוּחוֹת בְּיָדִי הֵיכָן אֶתְּנֵם?
ועשית לך ארון עץ MAKE THEE AN ARK OF WOOD. I, however made the Ark first, because when I came with the tablets in my hand where could I place them?
(א)ושמתם בארון ולא תהיה נושאים עוד על ידיך ולא יהיו עוד על ידיך, ולא יהיו מצויות לך לשברם כמו האחרות.
(1) ושמתם בארון, “you shall put them inside the ark.” You shall not carry them in your hands so that you will not have an opportunity to smash them, as you did with the last ones.
ועשית לך וגו׳ [Moshe was commanded to make an ארון for the tablets.] Thereby the indication was given beforehand that they would not be broken again, implying the Divine assurance that, despite the people's present imperfection, Israel's calling would remain in effect. and Israel would ultimately be the bearers of G-d's Torah and the keepers of its charge.
III. Is This Ark the Ark?
(ח) וְעָ֥שׂוּ לִ֖י מִקְדָּ֑שׁ וְשָׁכַנְתִּ֖י בְּתוֹכָֽם׃ (ט) כְּכֹ֗ל אֲשֶׁ֤ר אֲנִי֙ מַרְאֶ֣ה אוֹתְךָ֔ אֵ֚ת תַּבְנִ֣ית הַמִּשְׁכָּ֔ן וְאֵ֖ת תַּבְנִ֣ית כׇּל־כֵּלָ֑יו וְכֵ֖ן תַּעֲשֽׂוּ׃ {ס}(י) וְעָשׂ֥וּ אֲר֖וֹן עֲצֵ֣י שִׁטִּ֑ים אַמָּתַ֨יִם וָחֵ֜צִי אׇרְכּ֗וֹ וְאַמָּ֤ה וָחֵ֙צִי֙ רׇחְבּ֔וֹ וְאַמָּ֥ה וָחֵ֖צִי קֹמָתֽוֹ׃ (יא) וְצִפִּיתָ֤ אֹתוֹ֙ זָהָ֣ב טָה֔וֹר מִבַּ֥יִת וּמִח֖וּץ תְּצַפֶּ֑נּוּ וְעָשִׂ֧יתָ עָלָ֛יו זֵ֥ר זָהָ֖ב סָבִֽיב׃
(8) And let them make Me a sanctuary that I may dwell among them. (9) Exactly as I show you—the pattern of the Tabernacle and the pattern of all its furnishings—so shall you make it. (10) They shall make an ark of acacia wood, two and a half cubits long, a cubit and a half wide, and a cubit and a half high. (11) Overlay it with pure gold—overlay it inside and out—and make upon it a gold molding round about.
(א) וַיַּ֧עַשׂ בְּצַלְאֵ֛ל אֶת־הָאָרֹ֖ן עֲצֵ֣י שִׁטִּ֑ים אַמָּתַ֨יִם וָחֵ֜צִי אׇרְכּ֗וֹ וְאַמָּ֤ה וָחֵ֙צִי֙ רׇחְבּ֔וֹ וְאַמָּ֥ה וָחֵ֖צִי קֹמָתֽוֹ׃ (ב) וַיְצַפֵּ֛הוּ זָהָ֥ב טָה֖וֹר מִבַּ֣יִת וּמִח֑וּץ וַיַּ֥עַשׂ ל֛וֹ זֵ֥ר זָהָ֖ב סָבִֽיב׃
(1) Bezalel made the ark of acacia wood, two and a half cubits long, a cubit and a half wide, and a cubit and a half high. (2) He overlaid it with pure gold, inside and out; and he made a gold molding for it round about.
רַבִּי יוֹחָנָן רָמֵי. כְּתִיב: ״וְעָשִׂיתָ לְּךָ אֲרוֹן עֵץ״, וּכְתִיב: ״וְעָשׂוּ אֲרוֹן עֲצֵי שִׁטִּים״, מִכָּאן לְתַלְמִיד חָכָם, שֶׁבְּנֵי עִירוֹ מְצֻוִּוין לַעֲשׂוֹת לוֹ מְלַאכְתּוֹ. ״מִבַּיִת וּמִחוּץ תְּצַפֶּנּוּ״. אָמַר רָבָא: כׇּל תַּלְמִיד חָכָם שֶׁאֵין תּוֹכוֹ כְּבָרוֹ — אֵינוֹ תַּלְמִיד חָכָם.
Rabbi Yoḥanan raised a contradiction: It is written: “And you shall make for yourself a wooden Ark” (Deuteronomy 10:1), implying that Moses alone was commanded to construct the Ark; and it is written: “And they shall make an Ark of acacia wood” (Exodus 25:10), implying that the Jewish people were all commanded to be involved in its construction. The apparent resolution to this contradiction is that although only Moses actually constructed the Ark, everyone was required to support the endeavor. So too, from here it is derived with regard to a Torah scholar that the members of his town should perform his work for him to support him and allow him to focus on his studies, since it is also the town’s responsibility to enable him to study. The verse states concerning the Ark: “From within and from without you shall cover it” (Exodus 25:11). Rava said: This alludes to the idea that any Torah scholar whose inside is not like his outside, i.e., whose outward expression of righteousness is insincere, is not to be considered a Torah scholar.
... וְלֹא זֶה הוּא הָאָרוֹן שֶׁעָשָׂה בְצַלְאֵל, שֶׁהֲרֵי מִשְׁכָּן לֹא נִתְעַסְּקוּ בוֹ עַד לְאַחַר יוֹם הַכִּפּוּרִים, כִּי בְּרִדְתּוֹ מִן הָהָר צִוָּה לָהֶם עַל מְלֶאכֶת הַמִּשְׁכָּן, וּבְצַלְאֵל עָשָׂה מִשְׁכָּן תְּחִלָּה וְאַחַר כָּךְ אָרוֹן וְכֵלִים, נִמְצָא זֶה אָרוֹן אַחֵר הָיָה, וְזֶהוּ שֶׁהָיָה יוֹצֵא עִמָּהֶם לַמִּלְחָמָה...
...Now this was not the Ark which Bezaleel made for the Tabernacle, because with the Tabernacle they did not occupy themselves until after the Day of Atonement, for only when he came down from the mountain on that day did he give them the command regarding the construction of the Tabernacle, and Bezaleel made the Tabernacle first and afterwards the Ark and the other articles (Berakhot 55a). It follows, therefore, that this was another Ark; and it was this, that went forth with them to battle...
רִבִּי יוּדָה בֶּן לָקִישׁ אָמַר. שְׁנֵי אֲרוֹנוֹת הָיוּ מְהַלְּכִין עִם יִשְׂרָאֵל בַּמִּדְבָּר. אֶחָד שֶׁהָיְתָה הַתּוֹרָה נְתוּנָה בְתוֹכוֹ. וְאֶחָד שֶׁהָיוּ שִׁבְרֵי הַלּוּחוֹת נְתוּנִין בְתוֹכוֹ. זֶה שֶׁהָיְתָה הַתּוֹרָה נְתוּנָה בְתוֹכוֹ הָיָה מוּנַח בְּאֹהֵל מוֹעֵד. הָדָא הִיא דִכְתִיב וַאֲרוֹן בְּרִית יְי וּמֹשֶׁה לֹא מָשׁוּ מִקֶּרֶב הַמַּחֲנֶה. זֶה שֶׁהָיוּ שִׁבְרֵי הַלּוּחוֹת בְתוֹכוֹ הָיָה נִכְנַס וְיוֹצֵא עִמָּהֶן וּפְעָמִים הוּא מַתְרֶה עִמָּהֶן.
Rebbi Jehudah ben Laqish says, two arks were travelling with Israel in the desert; one in which the Torah was deposited and one in which the broken pieces of the tablets were deposited. The one in which the Torah was deposited was put into the Tent of Meeting; that is what is written: Moses and the Ark of the Eternal’s covenant did not move from the camp. The one in which the broken pieces of the tablets were deposited was going out and coming in with them.
IV. Materials and Meaning
IVa. The Gold
Haberman translation

We showed that metals, because of their hardness, appear in תנ׳׳ך as metaphors for firmness and strength. Because of their value, they [also] appear as symbols of the value attached to spiritual assets. But especially because of their metallurgical properties, they appear as symbols of all that is good and true in "alloys" containing various degrees of evil and falsehood, and as metaphors for the process of testing and refinement associated with truth and morality [citations omitted]. In all these pasages, metals symbolize various degrees of moral purity and truth. Copper represents an ignoble nature, not yet refined. Silver signifies the stage of requiring purification and being amenable to refinement. Gold, which is usually found in unalloyed form and which can withstand the most rigorous tests, is a symbol of the purest and most refined moral nobility and of true and unfailing constancy... gold represents the most genuine, and hence the most perfect, form of goodness and purity, which can withstand any test.
Gold as contrasted with the wood:
"מדרש הגדול": על הארון נאמר: "וצפית אתו זהב טהור מבית ומחוץ תצפנו" (שמות, כה:יא), ועל כך מוצאים אנו ב"מדרש הגדול" התימני מדרש שמקורו איננו ידוע לי, וזו לשונו: 'וכי מאחר שהוא מצופה זהב מבית ומחוץ, עץ למה לי? לומר לך אלמלא יצר-הרע אין שבח לתלמידי חכמים; אלא שבחן שכובשין את יצרן יותר; וכן הוא אומר: "ומשל ברוחו מלכד עיר" (משלי, טז:לב), ותנן (כלומר: ושנינו:למדנו): 'איזהו גיבור - הכובש את יצרו'.
"Midrash HaGadol": Regarding the ark, it is said, "and overlay it with pure gold—overlay it inside and out" (Exodus 25:11), and regarding this, we find in the Yemenite Midrash HaGadol , whose origins are unknown to me, and this is its langugage: "And since, once it is overlaid with gold inside and out, what is the purpose of the wood? To tell you that without an evil inclination, there would be no praise for great scholars; rather, the praise is that they do more to conquer their inlination; and so it is said, "[better] to have self-control than to conquer a city" (Proverbs 16:32). And it is taught: "Who is strong? One who conquers his inclination."

IVb. The Acacia Wood
(א)ועצי שטים. נוטריקון "שלום "טובה "ישועה "מחילה. ובמדבר היו שם יערים גדולים שנטלו משם אותן עצים הקרוים שטים... ורש"י ז"ל פירש שהקרשים היו מנטיעות שנטע יעקב בבואו למצרים וכשיצאו נשאום עמהם ועשו מהם קרשים...
(1) ועצי שטים, “and acacia wood.” Actually, the word שטים is a notrikon, an acrostic composed of the respective first letters in the words: שלום, טובה, ישועה, מחילה, “peace, goodness, salvation, and pardon.” There were some forests in the desert from which the Israelites were able to cut boards which they called shittim... Rashi claims that the shittim wood were trees that Yaakov had planted in Egypt as soon as he had come to Egypt, which the Israelites uprooted and took with them when departing from Egypt and which were used now to make the boards for the Tabernacle from...
Haberman translation
עצי שטים. The עץ, the tree, generally symbolizes steady, progressive growth and development. ארז, the cedar, of which the שטה is one among ten varieties, represents, in addition, the characteristics of greatness and strength. Thus, עצי שטים in the Tabernacle and its furnishings generally symbolize vigorous, enduring, ever-renewed and continuous development.