It is always well when the LORD'S servants can produce the LORD'S authority for what they do. Exodus 29:4-37. But, Reader, be very careful to see in all this, the call of JESUS to the priesthood. Hebrews 5:4.
Related Commentaries of Leviticus 8:4
Leviticus 8:4-5
4 And Moses did as the LORD commanded him; and the assembly was gathered together unto the door of the tabernacle of the congregation.
5 And Moses said unto the congregation, This is the thing which the LORD commanded to be done.