Numbers 18:1-3

UKJV(i) 1 And the LORD said unto Aaron, You and your sons and your father's 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 And your brethren also of the tribe of Levi, the tribe of your father, bring you with you, that they may be joined unto you, and minister unto you: but you and your sons with you shall minister before the tabernacle of witness. 3 And they shall keep your charge, and the charge of all the tabernacle: only they shall not come nigh the vessels of the sanctuary and the altar, that neither they, nor all of you also, die.