22 and these waters which cause the curse have gone into thy bowels, to cause the belly to swell, and the thigh to fall; and the woman hath said, Amen, Amen. 23 'And the priest hath written these execrations in a book, and hath blotted 'them' out with the bitter waters, 24 and hath caused the woman to drink the bitter waters which cause the curse, and the waters which cause the curse have entered into her for bitter things. 25 'And the priest hath taken out of the hand of the woman the present of jealousy, and hath waved the present before Jehovah, and hath brought it near unto the altar; 26 and the priest hath taken a handful of the present, its memorial, and hath made perfume on the altar, and afterwards doth cause the woman to drink the water: 27 yea, he hath caused her to drink the water, and it hath come to pass, if she hath been defiled, and doth commit a trespass against her husband, that the waters which cause the curse have gone into her for bitter things, and her belly hath swelled, and her thigh hath fallen, and the woman hath become an execration in the midst of 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.