Numbers 18:1-2

Revised Standard Version

Responsibility of Priests and Levites

18 So the Lord said to Aaron, “You and your sons and your fathers’ house with you shall bear iniquity in connection with the sanctuary; and you and your sons with you shall bear iniquity in connection with your priesthood. ² And with you bring your brethren also, the tribe of Levi, the tribe of your father, that they may join you, and minister to you while you and your sons with you are before the tent of the testimony.