TSK
Treasury of Scripture Knowledge references in WEB.
You shall consume all the peoples whom Yahweh your God shall deliver to you; your eye shall not pity them: neither shall you serve their gods; for that will be a snare to you.
Joshua made peace with them, and made a covenant with them, to let them live. The princes of the congregation swore to them.
He took Agag the king of the Amalekites alive, and utterly destroyed all the people with the edge of the sword.
But Jehu took no heed to walk in the law of Yahweh, the God of Israel, with all his heart. He didn't depart from the sins of Jeroboam, with which he made Israel to sin.
When his disciples, James and John, saw this, they said, "Lord, do you want us to command fire to come down from the sky, and destroy them, just as Elijah did?"
For I testify about them that they have a zeal for God, but not according to knowledge.