Numbers 5:19-20

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’—