Leviticus 6:7-9

⁷The priest shall make atonement for him before the LORD, and he will be forgiven concerning whatever he does to become guilty.”

⁸The LORD spoke to Moses, saying,

⁹“Command Aaron and his sons, saying, ‘This is the law of the burnt offering: the burnt offering shall be on the hearth on the altar all night until the morning; and the fire of the altar shall be kept burning on it.