This message is from Leviticus 16. The mountain peak to the book of Leviticus is chapter 16 which outlines the day of atonement. Aaron sacrifices a goat and sends another out into the wilderness to symbolically carry away the sins of the people. As we follow the Biblical trail of sacrifice we arrive at Hebrews 9-10 where we see the better, once-and-for-all sacrifice given to us from God.
The Day of Atonement