Numbers 5:19-22

5:19 Then the priest will put the woman under oath and say to the her, “If no other man has had sexual relations with you, and if you have not gone astray and become defiled while under your husband’s authority, may you be free from this bitter water that brings a curse. 5:20 But if you have gone astray while under your husband’s authority, and if you have defiled yourself and some man other than your husband has had sexual relations with you….” 5:21 Then the priest will put the woman under the oath of the curse and will say to the her, “The Lord make you an attested curse among your people, if the Lord makes your thigh fall away and your abdomen swell; 5:22 and this water that causes the curse will go into your stomach, and make your abdomen swell and your thigh rot.” Then the woman must say, “Amen, amen.”

Matthew 23:18

23:18 And, ‘Whoever swears by the altar is bound by nothing. But if anyone swears by the gift on it he is bound by the oath.’