Numbers 5:18-20

18After the priest has the woman stand before the Lord, he is to let down her hair and place in her hands the grain offering for remembrance, which is the grain offering of jealousy. The priest is to hold the bitter water that brings a curse.

19The priest will require the woman to take an oath and will say to her, ‘If no man has slept with you, if you have not gone astray and become defiled while under your husband’s authority, be unaffected by this bitter water that brings a curse.

20But if you have gone astray while under your husband’s authority, if you have defiled yourself and a man other than your husband has slept with you’ —