וַיִּשְׂא֣וּ בְנֵֽי־הַלְוִיִּ֗ם אֵ֚ת אֲר֣וֹן הָֽאֱלֹהִ֔ים כַּאֲשֶׁ֛ר צִוָּ֥ה מֹשֶׁ֖ה כִּדְבַ֣ר יְהוָ֑ה בִּכְתֵפָ֥ם בַּמֹּט֖וֹת עֲלֵיהֶֽם׃ (פ)
And the children of the Levites bore the ark of God upon their shoulders with the bars thereon, as Moses commanded according to the word of the LORD.
Read midrashic interpretation of I Chronicles 15:15: and classical rabbinic exegesis.