Leviticus 16:6-11, 21-22, 29-30, 34

Then he will offer the bull for the sin offering for himself to remove sins from him and his family so they will belong to the LORD. “Next Aaron will take the two goats and bring them before the LORD at the entrance to the Meeting Tent. He will throw lots for the two goats—one will be for the LORD and the other for the goat that removes sin. Then Aaron will take the goat that was chosen for the LORD by throwing the lot, and he will offer it as a sin offering. The other goat, which was chosen by lot to remove the sin, must be brought alive before the LORD. The priest will use it to perform the acts that remove Israel’s sin so they will belong to the LORD. Then this goat will be sent out into the desert as a goat that removes sin. “Then Aaron will offer the bull as a sin offering for himself, to remove the sins from him and his family so they will belong to the LORD; he will kill the bull for the sin offering for himself.

He will put both his hands on the head of the living goat, and he will confess over it all the sins and crimes of Israel. In this way Aaron will put the people’s sins on the goat’s head. Then he will send the goat away into the desert, and a man who has been appointed will lead the goat away. So the goat will carry on itself all the people’s sins to a lonely place in the desert. The man who leads the goat will let it loose there.

“This law will always continue for you: On the tenth day of the seventh month, you must deny yourself and you must not do any work. The travelers or foreigners living with you must not work either. It is on this day that the priests will make you clean so you will belong to the LORD again. All your sins will be removed.

That law for removing the sins of the Israelites so they will belong to the LORD will continue forever. You will do these things once a year.” So they did the things the LORD had commanded Moses.