Summary

Mikraot Gedolot — Deuteronomy 21…

However, if he marries her, he will come, in the end, to hate her, as it says afterwards, "If a man will have [two wives, one beloved and one despised] " (Deuteronomy 21:15) , and in the end, to have born from her, a stubborn and rebellious son, therefore, these two sections are close to each other. לא דברה תורה אלא כנגד יצר הרע.
Source: Wikisource

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