Numbers 5:21

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;

Numbers 5:27

5:27 When he has made her drink the water, then, if she has defiled herself and behaved unfaithfully toward her husband, the water that brings a curse will enter her to produce bitterness – her abdomen will swell, her thigh will fall away, and the woman will become a curse among her people.

Numbers 22:6

22:6 So now, please come and curse this nation for me, for they are too powerful for me. Perhaps I will prevail so that we may conquer them and drive them out of the land. For I know that whoever you bless is blessed, and whoever you curse is cursed.”