But to the Kohathites he did not give any; since theirs was the service of the [most] sacred objects, their porterage was by shoulder.
Numbers 7:9
Then Joshua ordered the priests, “Take up the Ark of the Covenant and advance to the head of the people.” And they took up the Ark of the Covenant and marched at the head of the people.
Joshua 3:6
Then Zadok appeared, with all the Levites carrying the Ark of the Covenant of God; and they set down the Ark of God until all the people had finished marching out of the city. Abiathar also came up. But the king said to Zadok, “Take the Ark of God back to the city. If I find favor with the LORD, He will bring me back and let me see it and its abode.
2 Samuel 15:24-25
The Levites carried the Ark of God by means of poles on their shoulders, as Moses had commanded in accordance with the word of the LORD.
1 Chronicles 15:15