4 Maccabees 2:17-19

Revised Standard Version

¹⁷ When Moses was angry with Dathan and Abi′ram he did nothing against them in anger, but controlled his anger by reason. ¹⁸ For, as I have said, the temperate mind is able to get the better of the emotions, to correct some, and to render others powerless. ¹⁹ Why else did Jacob, our most wise father, censure the households of Sim′eon and Levi for their irrational slaughter of the entire tribe of the She′chemites, saying, “Cursed be their anger”?