The Bible
Leviticus 6
The people must first make restitution for sin, then offer a trespass offering, and thereby gain forgiveness through atonement made by the priests.
1And the Lord spake unto Moses, saying,
8¶ And the Lord spake unto Moses, saying,
13The fire shall ever be burning upon the altar; it shall never go out.
19¶ And the Lord spake unto Moses, saying,
23For every meat offering for the priest shall be wholly burnt: it shall not be eaten.
24¶ And the Lord spake unto Moses, saying,
29All the males among the priests shall eat thereof: it is most holy.