Numbers 5:11-15

11The Lord spoke to Moses:

12“Speak to the Israelites and tell them: If any man’s wife goes astray, is unfaithful to him,

13and sleeps with another, but it is concealed from her husband, and she is undetected, even though she has defiled herself, since there is no witness against her, and she wasn’t caught in the act;

14and if a feeling of jealousy comes over the husband and he becomes jealous because of his wife who has defiled herself — or if a feeling of jealousy comes over him and he becomes jealous of her though she has not defiled herself —

15then the man is to bring his wife to the priest. He is also to bring an offering for her of two quarts of barley flour. He is not to pour oil over it or put frankincense on it because it is a grain offering of jealousy, a grain offering for remembrance to draw attention to guilt.