Leviticus 5:17-18

New American Standard Bible

¹⁷ “Now if a person sins and does any of the things ^[a]which the Lord has commanded not to be done, ^(A)though he was unaware, he is still guilty and shall bear his punishment. ¹⁸ He is then to bring to the priest ^(B)a ram without defect from the flock, according to your assessment, as a guilt offering. So the priest shall make atonement for him concerning his sin which he committed ^(C)unintentionally and did not know it, and it will be forgiven him.