2 Chronicles 25:5-13

Moreover Amaziah gathered Judah together, and ordered them according to their fathers’ houses, under captains of thousands and captains of hundreds, even all Judah and Benjamin: and he numbered them from twenty years old and upward, and found them three hundred thousand chosen men, able to go forth to war, that could handle spear and shield. He hired also a hundred thousand mighty men of valor out of Israel for a hundred talents of silver. But there came a man of God to him, saying, O king, let not the army of Israel go with thee; for Jehovah is not with Israel, to wit, with all the children of Ephraim. But if thou wilt go, do valiantly, be strong for the battle: God will cast thee down before the enemy; for God hath power to help, and to cast down. And Amaziah said to the man of God, But what shall we do for the hundred talents which I have given to the army of Israel? And the man of God answered, Jehovah is able to give thee much more than this. Then Amaziah separated them, to wit, the army that was come to him out of Ephraim, to go home again: wherefore their anger was greatly kindled against Judah, and they returned home in fierce anger. And Amaziah took courage, and led forth his people, and went to the Valley of Salt, and smote of the children of Seir ten thousand. And other ten thousand did the children of Judah carry away alive, and brought them unto the top of the rock, and cast them down from the top of the rock, so that they were all broken in pieces. But the men of the army whom Amaziah sent back, that they should not go with him to battle, fell upon the cities of Judah, from Samaria even unto Beth-horon, and smote of them three thousand, and took much spoil.