וַ֠יְהִי בעלות [כַּעֲל֨וֹת] הַכֹּהֲנִ֜ים נֹשְׂאֵ֨י אֲר֤וֹן בְּרִית־יְהוָה֙ מִתּ֣וֹךְ הַיַּרְדֵּ֔ן נִתְּק֗וּ כַּפּוֹת֙ רַגְלֵ֣י הַכֹּהֲנִ֔ים אֶ֖ל הֶחָרָבָ֑ה וַיָּשֻׁ֤בוּ מֵֽי־הַיַּרְדֵּן֙ לִמְקוֹמָ֔ם וַיֵּלְכ֥וּ כִתְמוֹל־שִׁלְשׁ֖וֹם עַל־כָּל־גְּדוֹתָֽיו׃
E aconteceu que, quando os kohanim que carregavam a Aron da Aliança de Hashem subiram do meio do Yarden, assim que as solas dos pés dos kohanim tocaram a terra seca, as águas do Yarden voltaram ao seu lugar e correram como antes por todas as suas margens.
Rashi
The soles of the feet of the Kohanim were lifted. [They were lifted] from the water to the dry land next to them, and the water returned to their place. The result of this was that the Ark was on this [eastern] side and the Bnei Yisroel were on this [the western] side. Thus the Ark lifted its carriers and crossed over. It was regarding this that Uzzah was punished ‘when he took hold of the Ark,’7II Shmuel, VI: 6,7. for if the Ark carried its carriers, it certainly was able to carry itself.8Thus by taking hold of the Ark, Uzzah manifested his fear that the Ark was going to fall off the wagon.