Num 5:11-31 And the LORD spoke to Moses, saying, “Speak to the people of Israel, If any man’s wife goes astray and breaks faith with him, if a man lies with her sexually, and it is hidden from the eyes of her husband, and she is undetected though she has defiled herself, and there is no witness against her, since she was not taken in the act, and if the spirit of jealousy comes over him and he is jealous of his wife who has defiled herself, or if the spirit of jealousy comes over him and he is jealous of his wife, though she has not defiled herself, then the man shall bring his wife to the priest and bring the offering required of her, a tenth of an ephah of barley flour. He shall pour no oil on it and put no frankincense on it, for it is a grain offering of jealousy, a grain offering of remembrance, bringing iniquity to remembrance. “And the priest shall bring her near and set her before the LORD. And the priest shall take holy water in an earthenware vessel and take some of the dust that is on the floor of the tabernacle and put it into the water. And the priest shall set the woman before the LORD and unbind the hair of the woman’s head and place in her hands the grain offering of remembrance, which is the grain offering of jealousy. And in his hand the priest shall have the water of bitterness that brings the curse. Then the priest shall make her take an oath, saying, ‘If no man has lain with you, and if you have not turned aside to uncleanness while you were under your husband’s authority, be free from this water of bitterness that brings the curse. But if you have gone astray, though you are under your husband’s authority, and if you have defiled yourself, and some man other than your husband has lain with you, then’ (let the priest make the woman take the oath of the curse, and say to the woman) ‘the LORD make you a curse and an oath among your people, when the LORD makes your thigh fall away and your body swell. May this water that brings the curse pass into your bowels and make your womb swell and your thigh fall away.’ And the woman shall say, ‘Amen, Amen.’ “Then the priest shall write these curses in a book and wash them off into the water of bitterness. And he shall make the woman drink the water of bitterness that brings the curse, and the water that brings the curse shall enter into her and cause bitter pain. And the priest shall take the grain offering of jealousy out of the woman’s hand and shall wave the grain offering before the LORD and bring it to the altar. And the priest shall take a handful of the grain offering, as its memorial portion, and burn it on the altar, and afterward shall make the woman drink the water. And when he has made her drink the water, then, if she has defiled herself and has broken faith with her husband, the water that brings the curse shall enter into her and cause bitter pain, and her womb shall swell, and her thigh shall fall away, and the woman shall become a curse among her people. But if the woman has not defiled herself and is clean, then she shall be free and shall conceive children. “This is the law in cases of jealousy, when a wife, though under her husband’s authority, goes astray and defiles herself, or when the spirit of jealousy comes over a man and he is jealous of his wife. Then he shall set the woman before the LORD, and the priest shall carry out for her all this law. The man shall be free from iniquity, but the woman shall bear her iniquity.”
This unique passage deals with the problem of a spirit of jealousy in a marriage. Part of the foundation for marriage is the expectation that one’s spouse will be romantically and sexually faithful, and there is a justified jealousy that comes from this expectation. However, there may also be unfounded jealousy that can damage a marriage. This passage gave Israel a way to deal with a spirit of jealousy that may or may not be justified. “This law was given partly to deter wives from adulterous practices, and partly to secure wives against the rage of their hard-hearted husbands, who otherwise might upon mere suspicions destroy them, or at least put them away.”
Sometimes jealousy in a marriage is revealed to be justified; other times it is found to be false. Either way, God gave Israel a way to dealt with this spirit of jealousy. Sometimes a husband or wife knows by intuition if their spouse has been unfaithful, through interpreting dozens of subtle indications. Yet, this intuition is not infallible – it is sometimes wrong. Accusations of infidelity that can’t be “proven” should be rightly resolved, and God gave Israel this unusual procedure to resolve such matters. This unusual law is evidence that God does not want couples to live in an on-going state of jealousy. The LORD gave a ceremony to resolve jealous feelings in a marriage, by either proving them or disproving them. This meant that the husband did not have the right to do as he pleased with his wife. He had to bring his wife to the priest and have the matter resolved by a higher authority. It was a serious, solemn thing to bring before the priest, discouraging groundless or frivolous accusations. The water was made bitter in two ways. First, it contained the dust from the floor of God’s holy tabernacle. Second, it contained the ink from the scroll containing God’s curse upon the sinner. The combination of seeing the holiness of God and the just penalty upon sinners is bitter.
Notably, if the woman was guilty, her punishment was not in the hand of her husband or even the community. Under the law of jealousy, the punishment of the woman was only in the hand of God. If the woman was innocent, it was known the entire community. At the very least, because this was a public ceremony, it made the entire community aware of the evil of adultery – and the seriousness of trying to hide your sin. The existence of the ceremony itself was an incentive to faithfulness in marriage, and therefore it was good for the entire nation.
Surely, both the holiness of God and the perfection of His word testifies against us. We should be forced to drink a bitter cup that would destroy us – but Jesus drank it for us. (Guzik)