What is the Curse of Adultery for Women in Numbers 5:21-22?

What is the curse mentioned Numbers 5:21ff.?

The passage reads that the curse would cause “her thigh to waste away and her abdomen to swell.” This is figurative language for infertility. It indicates a physical malady or reproductive problem that would prevent a woman from bearing children. During this time the Israelites viewed the inability to have children as a divine punishment for personal sin (see Deuteronomy 7:14), though not necessarily limited to adultery. God’s Word, however, does not make such blanket generalizations. Sarah, for example, bore disgrace for decades, though later she was called “holy” (1 Peter 3:5-6).

–The Quest Study Bible

Why Were Women Subjected to "Tests" for Suspected Adultery?

Why should an innocent wife go through all this because of a suspicious husband (Numbers 5:14-31)?

This would be for her own protection. This test actually functioned as a protective measure for a woman falsely accused of having an affair. Without it, the furious husband might harm her–even kill her. The law served as a deterrent against private acts of vengeance and retribution, and ensured justice in a potentially explosive situation.

–The Quest Study Bible

Why Would Glancing at Holy Things Result in Death?

Why would God kill people because they glanced at holy things (Numbers 4:20)?

Through strict requirements like these, God impressed upon his people the seriousness of his holiness. The underlying reason for this warning on God’s part may well have been mercy. It was a mercy of God that he had made himself known to anyone; it was the continuing mercy of God that he did not destroy more persons more quickly because of their wickedness; and it was a condescending mercy of God that he presented himself in their midst. The revelation of God’s word brings with it demands, some of which seem harsh and difficult. But God is near. Some seem to be so judgmental; yet God has not destroyed all. Some seem to be so threatening; yet God by his mercy allows some sense of his presence to remain known in the camp. His manifestation is based on his mercy; his strictures allow his mercy to continue to be realized.

–NIV Bible Commentary

What is the "Sea Cow" Mentioned in Numbers 4:6?

What is a “sea cow” (Numbers 4:6)?

Sea cows are dugongs, marine animals abounding on the coral banks of the Red Sea and in other tropical waters. A dugong grows to 11 feet long, with a round head, fish-like tail and flippers for forelimbs. Their appearance is similar to seals. Because the Red Sea borders ancient Egypt, it’s not surprising that Israel used their hides for various purposes.

–The Quest Study Bible