May this water that brings a curse enter your stomach and cause your belly to swell and your thigh to shrivel.’ Then the woman is to say, ‘Amen, Amen.’
We have here the law concerning the solemn trial of a wife whose husband was jealous of her. Observe, I. What was the case supposed: That a man had some reason to suspect his wife to have committed adultery, Num 5:12-14. Here, 1. The sin of adultery is justly represented as an exceedingly sinful sin; it is going aside from God and virtue, and the good way, Pro 2:17.
Commenting on Numbers 5:11-31
And this water that causeth the curse,.... Upon the drinking of which the curse follows, if guilty: shall go into thy bowels; and there operate and produce the above effects, which are repeated again to inject terror: to make thy belly to swell, and thy thigh to rot; here ends the form of the oath, which begins Num 5:19, and the woman shall say, amen...
the woman shall say, Amen, Amen--The Israelites were accustomed, instead of formally repeating the words of an oath merely to say, "Amen," a "so be it" to the imprecations it contained. The reduplication of the word was designed as an evidence of the woman's innocence, and a willingness that God would do to her according to her desert.