Then David commanded that no one but the Levites were to carry the ark of God, for the Lord had chosen them to carry the ark of the Lord and to minister to him forever.
He said to the Levites who taught all Israel and who were holy to the Lord, “Put the holy ark in the house that Solomon son of David, king of Israel, built; you need no longer carry it on your shoulders. Now serve the Lord your God and his people Israel.
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 minister to him, and to bless in his name, to this day.
Then Moses wrote down this law, and gave it to the priests, the sons of Levi, who carried the ark of the covenant of the Lord, and to all the elders of Israel.
and commanded the people, “When you see the ark of the covenant of the Lord your God being carried by the levitical priests, then you shall set out from your place. Follow it,
So Joshua son of Nun summoned the priests and said to them, “Take up the ark of the covenant, and have seven priests carry seven trumpets of rams' horns in front of the ark of the Lord.”