Numbers 5:18-20

18The priest shall then have the woman stand before the Lord and let down the hair of the woman’s head, and place the grain offering of reminder 1in her hands, that is, the grain offering of jealousy; and in the hand of the priest is to be the water of bitterness that brings a curse.

19And the priest shall have her take an oath and shall say to the woman, “If no man has had sexual relations with you and if you have not 2gone astray into uncleanness, as you are under the authority of your husband, be 3immune to this water of bitterness that brings a curse;

20if, however, you have 4gone astray, though under the authority of your husband, and if you have defiled yourself and a man other than your husband has had sexual intercourse with you”