TSK · Numbers 8:13

and Aaron shall offer the Levites before Yahweh for a wave offering, on the behalf of the children of Israel, that it may be theirs to do the service of Yahweh.

I, behold, I have taken your brothers the Levites from among the children of Israel: to you they are a gift, given to Yahweh, to do the service of the Tent of Meeting.

that I should be a servant of Christ Jesus to the Gentiles, serving as a priest the Good News of God, that the offering up of the Gentiles might be made acceptable, sanctified by the Holy Spirit.