Numbers 5:19-22

19And he is to put the woman under oath and say to her, ‘If no other man has slept with you and you have not gone astray and become defiled while under your husband’s authority, may you be immune to this bitter water that brings a curse. 20But if you have gone astray while under your husband’s authority and have defiled yourself and lain carnally with a man other than your husband’— 21and the priest shall have the woman swear under the oath of the curse—‘then may the LORD make you an attested curse among your people by making your thigh shrivel and your belly swell. 22May this water that brings a curse enter your stomach and cause your belly to swell and your thigh to shrivel.’

Then the woman is to say, ‘Amen, Amen.’