Numbers 18:1-3

Wycliffe Bible

18 And the Lord said to Aaron, Thou, and thy sons, and the house of thy father with thee, shall bear the wickedness of the saintuary; and thou and thy sons together shall suffer the sins of your priesthood (but only thou and thy sons shall bear the sins of your priesthood).

² But also take thou with thee thy brethren of the lineage of Levi, and the sceptre, or power, of thy father, and be they ready, that they minister to thee. Forsooth thou and thy sons shall minister in the tabernacle of witnessing; (And also take with thee thy brothers from the tribe of Levi, thy father’s tribe, and be they ready to serve thee. But thou and thy sons shall minister in the Tabernacle of the Witnessing;)

³ and the deacons shall (stand) watch at thy commandments, and at all the works of the tabernacle; so only that they nigh not to the vessels of the saintuary, and to the altar, lest both they die, and ye, and (you all) perish together. (and the Levites shall do thy commands, and all their work in the Tabernacle; but they must not go near the vessels of the sanctuary, lest both they and ye die, and all of you perish together.)