Leviticus 5:18-19

New Revised Standard Version Catholic Edition

¹⁸ You shall bring to the priest a ram without blemish from the flock, or the equivalent, as a guilt offering; and the priest shall make atonement on your behalf for the error that you committed unintentionally, and you shall be forgiven. ¹⁹ It is a guilt offering; you have incurred guilt before the Lord.