Leviticus 5:18

18 he shall even bring a ram without blemish from the flock, at a price of silver for his transgression to the priest; and the priest shall make atonement for his trespass of ignorance, wherein he ignorantly trespassed, and he knew it not; and it shall be forgiven him.

Leviticus 5:18 In-Context

16 And he shall make compensation for that wherein he has sinned in the holy things; and he shall add the fifth part to it, and give it to the priest; and the priest shall make atonement for him with the ram of transgression, and shall be forgiven him.
17 And the soul which shall sin, and do one thing any of the commandments of the Lord, which it is not right to do, and has not known it, and shall have transgressed, and shall have contracted guilt,
18 he shall even bring a ram without blemish from the flock, at a price of silver for his transgression to the priest; and the priest shall make atonement for his trespass of ignorance, wherein he ignorantly trespassed, and he knew it not; and it shall be forgiven him.
19 For he has surely been guilty of transgression before the Lord.

The Brenton translation of the Septuagint is in the public domain.