Exodus 28:42 in the King James Version
And thou shalt make them linen breeches to cover their nakedness; from the loins even unto the thighs they shall reach:
Context
41 You shall put them on Aaron your brother, and on his sons with him, and shall anoint them, and consecrate them, and sanctify them, that they may minister to me in the priest’s office.
42 You shall make them linen pants to cover their naked flesh. They shall reach from the waist even to the thighs.
43 They shall be on Aaron and on his sons, when they go in to the Tent of Meeting, or when they come near to the altar to minister in the holy place, that they don’t bear iniquity, and die. This shall be a statute forever to him and to his offspring after him.