22 Let this water that delivers a curse enter your body so that your belly swells and your womb shrivels.' "Then the woman shall say, 'Amen. Amen.' 23 "The priest is to write these curses on a scroll and then wash the words off into the bitter water. 24 He then is to give the woman the bitter water that delivers a curse. This water will enter her body and cause acute pain. 25 The priest then is to take from her hands a handful of the Grain-Offering for jealousy, wave it before God, and bring it to the Altar. 26 The priest then is to take a handful of the Grain-Offering, using it as an exposure-offering, and burn it on the Altar; after this he is to make her drink the water. 27 If she has defiled herself in being unfaithful to her husband, when she drinks the water that delivers a curse, it will enter her body and cause acute pain; her belly will swell and her womb shrivel. She will be cursed among her people.
Matthew Henry's Commentary on Numbers 5:22-27
Commentary on Numbers 5:11-31
(Read Numbers 5:11-31)
This law would make the women of Israel watch against giving cause for suspicion. On the other hand, it would hinder the cruel treatment such suspicions might occasion. It would also hinder the guilty from escaping, and the innocent from coming under just suspicion. When no proof could be brought, the wife was called on to make this solemn appeal to a heart-searching God. No woman, if she were guilty, could say "Amen" to the adjuration, and drink the water after it, unless she disbelieved the truth of God, or defied his justice. The water is called the bitter water, because it caused the curse. Thus sin is called an evil and a bitter thing. Let all that meddle with forbidden pleasures, know that they will be bitterness in the latter end. From the whole learn, 1. Secret sins are known to God, and sometimes are strangely brought to light in this life; and that there is a day coming when God will, by Christ, judge the secrets of men according to the gospel, Romans 2:16. 2 In particular, Whoremongers and adulterers God will surely judge. Though we have not now the waters of jealousy, yet we have God's word, which ought to be as great a terror. Sensual lusts will end in bitterness. 3. God will manifest the innocency of the innocent. The same providence is for good to some, and for hurt to others. And it will answer the purposes which God intends.