Exodus 28:42-43

Wycliffe Bible

⁴² Also thou shalt make to them linen breeches, that they cover the flesh of their filth[hood], from the reins unto their hips. (And thou shalt make linen breeches for them, so that they cover their naked flesh, from their reins unto their hips.)

⁴³ And Aaron and his sons shall use those breeches, when they shall enter into the tabernacle of witnessing, or when they nigh to the altar, that they minister in the saintuary, lest they be guilty of wickedness, and die; it shall be a lawful thing everlasting to Aaron, and to his seed after him. (And Aaron and his sons shall use those breeches, whenever they shall enter into the Tabernacle of the Witnessing, or when they approach the altar, to minister in the sanctuary, lest they be guilty of wickedness, and die; this shall be an everlasting law for Aaron, and for his descendants after him.)