Leviticus 16:3-4

Expanded Bible

³ “This is how Aaron may enter the Most Holy Place: Before he enters, he must offer a bull for a ·sin [or purification; 4:3] offering and a ·male sheep [ram] for a whole burnt offering [1:1–17]. ⁴ He must put on the holy linen inner robe [Ex. 28:39–41], with the linen underclothes [Ex. 28:42–43] next to his body. His belt will be the cloth belt [sash], and he will wear the linen turban. These are holy clothes, so he must bathe his body in water before he puts them on.