Numbers 5:18-20

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

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

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