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.
Then they set the priests in their divisions and the Levites in their courses for the service of God at Jerusalem, as it is written in the book of Moses.
Is it too little for you that the God of Israel has separated you from the congregation of Israel to allow you to approach him in order to perform the duties of the Lord’s tabernacle and to stand before the congregation and serve them?
So bring with you also your brothers of the tribe of Levi, your ancestral tribe, in order that they may be joined to you and serve you while you and your sons with you are in front of the tent of the covenant.
they shall be in charge of all the furnishings of the tent of meeting and attend to the duties for the Israelites as they do service at the tabernacle.
For they are unreservedly given to me from among the Israelites; I have taken them for myself, in place of all that open the womb, the firstborn of all the Israelites.
Moreover, I have given the Levites as a gift to Aaron and his sons from among the Israelites, to do the service for the Israelites at the tent of meeting and to make atonement for the Israelites, in order that there may be no plague among the Israelites for coming too close to the sanctuary.”