Cursed be their anger, for it is fierce, and their wrath, for it is cruel! I will divide them in Jacob and scatter them in Israel.
7. Cursed be their anger. What I have said must be kept in mind; namely, that we are divinely admonished by the mouth of the holy prophet, to keep at a distance from all wicked counsels. Jacob pronounces a woe upon their fury. Why is this, unless that others may learn to put a restraint upon themselves, and to be on their guard against such cruelty?
These were next in age to Reuben, and they also had been a grief and shame to Jacob, when they treacherously and barbarously destroyed the Shechemites, which he here remembers against them. Children should be afraid of incurring their parents' just displeasure, lest they fare the worse for it long afterwards, and, when they would inherit the blessing, be rejected. Observe, 1.
Commenting on Genesis 49:5-7
Cursed be their anger, for it was fierce,.... It was sinful anger in the nature of it, and so criminal and detestable; it was strong, fierce, and furious in its operation and effects, and so justly cursed; not their persons, but their passions: and their wrath, for it was cruel; it issued in the cruel and barbarous slaughter of the inhabitants of Shechem; the same...