Exodus 29:30 in the King James Version
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.
Context
29 “The holy garments of Aaron shall be for his sons after him, to be anointed in them, and to be consecrated in them.
30 Seven days shall the son who is priest in his place put them on, when he comes into the Tent of Meeting to minister in the holy place.
31 “You shall take the ram of consecration and boil its meat in a holy place.