Numbers 18:2 in the King James Version
And thy brethren also of the tribe of Levi, the tribe of thy father, bring thou with thee, that they may be joined unto thee, and minister unto thee: but thou and thy sons with thee shall minister before the tabernacle of witness.
Context
1 The LORD said to Aaron, “You and your sons and your fathers’ house with you shall bear the iniquity of the sanctuary; and you and your sons with you shall bear the iniquity of your priesthood.
2 Bring your brothers also, the tribe of Levi, the tribe of your father, near with you, that they may be joined to you, and minister to you; but you and your sons with you shall be before the Tent of the Testimony.
3 They shall keep your commands and the duty of the whole Tent; only they shall not come near to the vessels of the sanctuary and to the altar, that they not die, neither they nor you.