Numbers 5:21

19The priest shall cause her to take an oath and shall tell the woman, “If no man has lain with you, and if you haven’t gone aside to uncleanness, being under your husband’s authority, be free from this water of bitterness that brings a curse.

20But if you have gone astray, being under your husband’s authority, and if you are defiled, and some man has lain with you besides your husband—”

21then the priest shall cause the woman to swear with the oath of cursing, and the priest shall tell the woman, “May the LORD make you a curse and an oath among your people, when the LORD allows your thigh to fall away, and your body to swell;

22and this water that brings a curse will go into your bowels, and make your body swell, and your thigh fall away.” The woman shall say, “Amen, Amen.”

23“‘The priest shall write these curses in a book, and he shall wipe them into the water of bitterness.