Now Nadab and Abiu died, without children, when they offered strange fire before the Lord, in the desert of Sinai: and Eleazar and Ithamar performed the priestly office in the presence of Aaron their father.
And take with thee thy brethren also of the tribe of Levi, and the sceptre of thy father: and let them be ready in hand, and minister to thee. But thou and thy sons shall minister in the tabernacle of the testimony.
Neither shall there be cut off from the priests and Levites a man before my face to offer holocausts and to burn sacrifices and to kill victims continually.
They shall be officers in my sanctuary, and doorkeepers of the gates of the house, and ministers to the house: they shall slay the holocausts, and the victims of the people: and they shall stand in their sight, to minister to them.