Exodus 28:42-43

International Standard Version

⁴² “You are to make linen undergarments for them to cover their naked flesh, and they are to reach^[a] from the loins to the thighs. ⁴³ They are to be on Aaron and his sons when they enter the Tent of Meeting or when they approach the altar to minister in the Holy Place so they don’t incur guilt and die. This is to be a perpetual ordinance for him and for his descendants^[b] after him.”