Numbers 5:20-21

20But if thou hast gone astray to another instead of thy husband, and hast been defiled, and a man other than thy husband have lain with thee,

21— then the priest shall adjure the woman with the oath of cursing, and the priest shall say unto the woman: Jehovah make thee a curse and an oath among thy people, when Jehovah doth make thy thigh to shrink, and thy belly to swell;