Ark of the Covenant was Carried by Priests of Levites Alone
Source: TTT
Deuteronomy 10:8
At that time the LORD set apart the tribe of Levi to carry the ark of the covenant of the LORD, to stand before the LORD to serve Him, and to pronounce blessings in His name, as they do to this day.
Joshua 3:14
So when the people broke camp to cross the Jordan, the priests carried the ark of the covenant ahead of them.
2 Samuel 15:24
Zadok was also there, and all the Levites with him were carrying the ark of the covenant of God. And they set down the ark of God, and Abiathar offered sacrifices until the people had passed out of the city.
1 Chronicles 15:2
Then David said, “No one but the Levites may carry the ark of God, because the LORD has chosen them to carry the ark of the LORD and to minister before Him forever.”