Numbers 5:21-24

21then the priest shall cause the woman to swear with the oath of cursing, and the priest shall say unto the woman, The LORD make thee a curse and an oath among thy people, when the LORD doth make thy thigh to fall away, and thy belly to swell;

22and this water that causeth the curse shall go into thy bowels, and make thy belly to swell, and thy thigh to fall away: and the woman shall say, Amen, Amen.

23And the priest shall write these curses in a book, and he shall blot them out into the water of bitterness:

24and he shall make the woman drink the water of bitterness that causeth the curse: and the water that causeth the curse shall enter into her and become bitter.