Numbers 18:6 in the King James Version
And I, behold, I have taken your brethren the Levites from among the children of Israel: to you they are given as a gift for the LORD, to do the service of the tabernacle of the congregation.
Context
5 “You shall perform the duty of the sanctuary and the duty of the altar, that there be no more wrath on the children of Israel.
6 Behold, I myself have taken your brothers the Levites from among the children of Israel. They are a gift to you, dedicated to the LORD, to do the service of the Tent of Meeting.
7 You and your sons with you shall keep your priesthood for everything of the altar, and for that within the veil. You shall serve. I give you the service of the priesthood as a gift. The stranger who comes near shall be put to death.”