Leviticus 21:10

Rules for the High Priest

21:10 “‘The high priest – who is greater than his brothers, on whose head the anointing oil is poured, who has been ordained to wear the priestly garments – must neither dishevel the hair of his head nor tear his garments.

Leviticus 21:12

21:12 He must not go out from the sanctuary and must not profane the sanctuary of his God, because the dedication of the anointing oil of his God is on him. I am the Lord.