Leviticus 8:33

8:33 And you must not go out from the entrance of the Meeting Tent for seven days, until the day when your days of ordination are completed, because you must be ordained over a seven-day period.

Leviticus 16:32

16:32 “The priest who is anointed and ordained to act as high priest in place of his father is to make atonement. He is to put on the linen garments, the holy garments,

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.