Complete Commentary on the Whole Bible, by Matthew Henry, at sacred-texts.com
(v. 1-19) Dinah defiled by Shechem.
(Gen 34:20-31) The Shechemites murdered by Simeon and Levi.
Young persons, especially females, are never so safe and well off as under the care of pious parents. Their own ignorance, and the flattery and artifices of designing, wicked people, who are ever laying snares for them, expose them to great danger. They are their own enemies if they desire to go abroad, especially alone, among strangers to true religion. Those parents are very wrong who do not hinder their children from needlessly exposing themselves to danger. Indulged children, like Dinah, often become a grief and shame to their families. Her pretence was, to see the daughters of the land, to see how they dressed, and how they danced, and what was fashionable among them; she went to see, yet that was not all, she went to be seen too. She went to get acquaintance with the Canaanites, and to learn their ways. See what came of Dinah's gadding. The beginning of sin is as the letting forth of water. How great a matter does a little fire kindle! We should carefully avoid all occasions of sin and approaches to it.
The Shechemites submitted to the sacred rite, only to serve a turn, to please their prince, and to enrich themselves, and it was just with God to bring punishment upon them. As nothing secures us better than true religion, so nothing exposes us more than religion only pretended to. But Simeon and Levi were most unrighteous. Those who act wickedly, under the pretext of religion, are the worst enemies of the truth, and harden the hearts of many to destruction. The crimes of others form no excuse for us. Alas! how one sin leads on to another, and, like flames of fire, spread desolation in every direction! Foolish pleasures lead to seduction; seduction produces wrath; wrath thirsts for revenge; the thirst of revenge has recourse to treachery; treachery issues in murder; and murder is followed by other lawless actions. Were we to trace the history of unlawful commerce between the sexes, we should find it, more than any other sin, ending in blood.