Leviticus 5:3

5:3 or when he touches human uncleanness with regard to anything by which he can become unclean, even if he did not realize it, but he himself has later come to know it and is guilty;

Leviticus 10:17

10:17 “Why did you not eat the sin offering in the sanctuary? For it is most holy and he gave it to you to bear the iniquity of the congregation, to make atonement on their behalf before the Lord.

Leviticus 16:34

16:34 This is to be a perpetual statute for you to make atonement for the Israelites for all their sins once a year.” So he did just as the Lord had commanded Moses.

Leviticus 24:23

24:23 Then Moses spoke to the Israelites and they brought the one who cursed outside the camp and stoned him with stones. So the Israelites did just as the Lord had commanded Moses.