'Bitterness' in the Bible

The priest shall set the woman before Yahweh, and let the hair of the woman's head go loose, and put the meal offering of memorial in her hands, which is the meal offering of jealousy. The priest shall have in his hand the water of bitterness that brings a curse.

The priest shall cause her to swear, and shall tell the woman, "If no man has lain with you, and if you haven't gone aside to uncleanness, being under your husband, be free from this water of bitterness that brings a curse.

"'The priest shall write these curses in a book, and he shall blot them out into the water of bitterness.

He shall make the woman drink the water of bitterness that causes the curse; and the water that causes the curse shall enter into her and become bitter.