Leviticus 8:33

“You shall put them on Aaron your brother and on his sons with him; and you shall anoint them and ordain them and set them apart as holy, that they may minister to Me as priests.

“Now this is what you shall do to them to set them apart as holy to minister as priests to Me: take one bull from the herd and two rams without blemish,

“You shall gird them with sashes, Aaron and his sons, and bind caps on them, and they shall have the priesthood by a perpetual statute. So you shall ordain Aaron and his sons.

“Thus you shall do to Aaron and to his sons, according to all that I have commanded you; you shall ordain them through seven days.

‘Now when the man with the discharge becomes cleansed from his discharge, then he shall count off for himself seven days for his cleansing; he shall then wash his clothes and bathe his body in running water and will become clean.

‘For seven days you shall offer daily a goat for a sin offering; also a bull from the herd and a ram from the flock, without blemish, shall be offered.