2 Chronicles 25:5-16 - Amaziah's Campaign Against Edom
5 And Amaziah gathered Judah together and arranged them according to the fathers' houses, according to the captains of thousands and the captains of hundreds, throughout Judah and Benjamin; and he numbered them from twenty years old and upwards, and found them three hundred thousand choice men, able for military service, that could handle spear and target. 6 He hired also a hundred thousand mighty men of valour out of Israel for a hundred talents of silver.
7 But there came a man of God to him, saying, O king, let not the host of Israel go with thee; for Jehovah is not with Israel, with all the children of Ephraim. 8 But if thou wilt go, do it; be strong for the battle: God will make thee fall before the enemy, for there is with God power to help and to cast down.
9 And Amaziah said to the man of God, But what is to be done for the hundred talents which I have given to the troop of Israel? And the man of God said, Jehovah is able to give thee much more than this.
10 Then Amaziah separated them, the troop that was come to him out of Ephraim, to go home again. And their anger was greatly kindled against Judah, and they returned home in fierce anger.
11 But Amaziah strengthened himself, and led forth his people, and went to the valley of salt, and smote of the children of Seir ten thousand. 12 And the children of Judah took ten thousand captive, alive, and brought them to the top of the cliff, and cast them down from the top of the cliff, so that they all were broken in pieces.
13 But those of the troop that Amaziah had sent back, that they should not go with him to battle, fell upon the cities of Judah from Samaria as far as Beth-horon, and smote three thousand of them, and took much spoil.
14 And it came to pass after Amaziah was come from the slaughter of the Edomites, that he brought the gods of the children of Seir, and set them up to be his gods, and bowed himself down before them, and burned incense to them. 15 And the anger of Jehovah was kindled against Amaziah, and he sent to him a prophet, who said to him, Why dost thou seek after the gods of a people who have not delivered their own people out of thy hand?
16 And it came to pass as he talked with him, that Amaziah said to him, Hast thou been made the king's counsellor? Forbear; why shouldest thou be smitten? Then the prophet forbore, and said, I know that God has determined to destroy thee, because thou hast done this, and hast not hearkened to my counsel.