The Talmud teaches that the Aron carried its bearers rather than being carried by them — a miraculous reversal showing that the Aron possessed its own spiritual power and those who bore it were elevated by it.
נִמְצָא אָרוֹן וְנוֹשְׂאָיו וְכֹהֲנִים מִצַּד אֶחָד, וְיִשְׂרָאֵל מִצַּד אֶחָד. נָשָׂא אָרוֹן אֶת נוֹשְׂאָיו וְעָבַר, שֶׁנֶּאֱמַר: ״וַיְהִי כַּאֲשֶׁר תַּם כׇּל הָעָם לַעֲבֹר וַיַּעֲבֹר אֲרוֹן ה׳ וְהַכֹּהֲנִים לִפְנֵי הָעָם״. וְעַל דָּבָר זֶה נֶעֱנַשׁ עוּזָּא, שֶׁנֶּאֱמַר: ״וַיָּבֹאוּ עַד גֹּרֶן כִּידֹן וַיִּשְׁלַח עֻזָּא אֶת יָדוֹ לֶאֱחֹז אֶת הָאָרוֹן״, אָמַר לוֹ הַקָּדוֹשׁ בָּרוּךְ הוּא: עוּזָּא, נוֹשְׂאָיו נָשָׂא, עַצְמוֹ לֹא כׇּל שֶׁכֵּן! אָמַר לוֹ הַקָּדוֹשׁ בָּרוּךְ הוּא: דִּבְרֵי תוֹרָה שֶׁכָּתוּב בָּהֶן ״הֲתָעִיף עֵינֶיךָ בּוֹ וְאֵינֶנּוּ״, אַתָּה קוֹרֵא אוֹתָן זְמִירוֹת?! הֲרֵינִי מַכְשִׁילְךָ בְּדָבָר שֶׁאֲפִילּוּ תִּינוֹקוֹת שֶׁל בֵּית רַבָּן יוֹדְעִין אוֹתוֹ, דִּכְתִיב: ״וְלִבְנֵי קְהָת לֹא נָתָן כִּי עֲבֹדַת הַקֹּדֶשׁ וְגוֹ׳״, וְאִיהוּ אַתְיֵיהּ בַּעֲגַלְתָּא.
It follows that the Ark and its bearers and the priests were on one side of the Jordan, the east side, and the rest of the Jewish people were on the other side, the west side. Subsequently, the Ark carried its bearers in the air and crossed the Jordan, as it is stated: “When all the people were completely passed over, the Ark of the Lord passed on, and the priests, before the people” (Joshua 4:11). And over this matter Uzzah was punished for not taking proper care of the Ark, as it is stated: “And when they came to the threshing floor of Chidon, Uzzah put forth his hand to hold the Ark; for the oxen stumbled” (I Chronicles 13:9). The Holy One, Blessed be He, said to him: Uzzah, the Ark carried its bearers when it crossed the Jordan; all the more so is it not clear that it can carry itself? The Holy One, Blessed be He, said to him: Matters of Torah are so difficult and demanding that it is written: “Will you set your eyes upon it? It is gone” (Proverbs 23:5), i.e., one whose eyes stray from the Torah even for a moment will forget it, and you call them songs? For this reason I will cause you to stumble in a matter that even schoolchildren know, as it is written with regard to the wagons brought to the Tabernacle: “And to the descendants of Kohath he did not give, because the service of the holy things belongs to them; they carry them upon their shoulders” (Numbers 7:9). And although the Ark clearly must be carried on people’s shoulders, David erred and brought it in a wagon.