Genesis 34:7

“And the sons of Jacob came out of the field, when they heard [it], etc.]. Either by a messenger Jacob sent to them, to acquaint them with it, or by some other hand: however, be it as it will, as soon as they heard of the abuse of their sister, they immediately left their flocks to the care of their servants, and came to their father’s tent: and the men were grieved and were very wroth; they were grieved for the sin committed against God, very probably, as well as for the injury done to their sister, and they were wroth against Shechem the author of it: because he had wrought folly in Israel, in lying with Jacob’s daughter; all sin is folly, being a transgression of the law of God founded in…”

“the men were grieved, and . . . very wroth--Good men in such a case could not but grieve; but it would have been well if their anger had been less, or that they had known the precept "let not the sun go down upon your wrath" [Eph 4:26]. No injury can justify revenge (Deu 32:35; Rom 12:9); but Jacob's sons planned a scheme of revenge in the most deceitful manner.”

“- Dinah’s Dishonor This chapter records the rape of Dinah and the revenge of her brothers. Genesis 34:1-5 Dinah went out to see the daughters of the land. The Jewish doctors of a later period fix the marriageable age of a female at twelve years and a day. It is probable that Dinah was in her thirteenth year when she went out to visit the daughters of the land. Six or seven years, therefore, must have been spent by Jacob between Sukkoth, where he abode some time, and the neighborhood of Shekerm, where he had purchased a piece of ground. If we suppose Dinah to have been born in the same year with Joseph, who was in his seventeenth year at the time of his being sold as a bondslave Genesis 37:2,…”