Exodus 29:30 KJV
And that son that is priest in his stead shall put them on seven days, when he cometh into the tabernacle of the congregation to minister in the holy place.
Exodus 29:30, King James Version
In context
29 And the holy garments of Aaron shall be his sons’ after him, to be anointed therein, and to be consecrated in them.
30 And that son that is priest in his stead shall put them on seven days, when he cometh into the tabernacle of the congregation to minister in the holy place.
31 And thou shalt take the ram of the consecration, and seethe his flesh in the holy place.