Leviticus 5:4-6

New Century Version

⁴ “‘Or someone might make a promise before the Lord without thinking. It might be a promise to do something bad or something good; it might be about anything. Even if he forgets about it, when he remembers, he will be guilty.

⁵ “‘When anyone is guilty of any of these things, he must tell how he sinned. ⁶ He must bring an offering to the Lord as a penalty for sin; it must be a female lamb or goat from the flock. The priest will perform the acts to remove that person’s sin so he will belong to the Lord.