The evil that thou wilt do - The intention is not to tax Hazael with special cruelty, but only to enumerate the ordinary horrors of war, as it was conducted among the Oriental nations of the time. Compare the marginal references.
Related Commentaries of 2 Kings 8:12
2 Kings 8:12
12 And Hazael said, Why weepeth my lord? And he answered, Because I know the evil that thou wilt do unto the children of Israel: their strong holds wilt thou set on fire, and their young men wilt thou slay with the sword, and wilt dash their children, and rip up their women with child.