Numbers 5:19

19 Then the priest will make her swear a solemn pledge, saying to the woman, "If no man has slept with you and if you haven't had an affair, becoming defiled while married to your husband, then be immune from the water of bitterness that brings these curses.

Numbers 5:19 In-Context

17 The priest will take holy water in a clay jar, and taking dust from the floor of the dwelling, the priest will place it in the water.
18 The priest will make the woman stand before the LORD, let the hair of the woman hang down, and place the grain offering for recognition, that is, the grain offering for jealousy, in her hands. The water of bitterness that brings the curse will be in the hands of the priest.
19 Then the priest will make her swear a solemn pledge, saying to the woman, "If no man has slept with you and if you haven't had an affair, becoming defiled while married to your husband, then be immune from the water of bitterness that brings these curses.
20 But if you have had an affair while married to your husband, if you have defiled yourself, and a man other than your husband has had intercourse with you"—
21 then the priest must make the woman utter the curse and say to the woman, "May the LORD make you a curse and a harmful pledge among your people, when the LORD induces a miscarriage and your womb discharges.
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