Exodus 28:3

3You shall speak to all the askillful, whom I have filled with a spirit of skill, that they make Aaron’s garments to consecrate him for my priesthood.

Exodus 29:1

Consecration of the Priests

1“Now this is what you shall do to them to consecrate them, that they may serve me as priests. bTake one bull of the herd and two rams without blemish,

Leviticus 21:23

23but he shall not go through the veil or approach the altar, because he has a blemish, that he may not cprofane my sanctuaries, dfor I am the Lord who sanctifies them.”
Copyright information for ESV