What does Numbers 5:18 mean?

And the priest shall set the woman before Jehovah, 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: and the priest shall have in his hand the water of bitterness that causeth the curse.

And the priest shall set the woman before the Lord, and uncover the woman’s head, and put the offering of memorial in her hands, which is the jealousy offering: and the priest shall have in his hand the bitter water that causeth the curse:

And the priest shall set the woman before Jehovah, 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: and the priest shall have in his hand the water of bitterness that causeth the curse.

And he will make the woman come before the Lord with her hair loose, and will put the meal offering, the offering of a bitter spirit, in her hands; and the priest will take in his hand the bitter water causing the curse;

and the priest hath caused the woman to stand before Jehovah, and hath uncovered the woman's head, and hath given into her hands the present of the memorial, it <FI>is<Fi> a present of jealousy, and in the hand of the priest are the bitter waters which cause the curse.

And when the woman shall stand before the Lord, he shall uncover her head, and shall put on her hands the sacrifice of remembrance, and the oblation of jealousy: and he himself shall hold the most bitter waters, whereon he hath heaped curses with execration.

And the priest shall set the woman before Jehovah, and uncover the woman's head, and put the memorial oblation in her hands, which is the jealousy offering; and in the hand of the priest shall be the bitter water that bringeth the curse.