2 Chronicles 25:9

5 Then Amaziah gathered the people of Judah and assigned them according to their families to commanders of thousands and of hundreds. And he numbered those twenty years of age or older throughout Judah and Benjamin and found 300,000 chosen men able to serve in the army, bearing the spear and shield.

6 He also hired 100,000 mighty warriors from Israel for a hundred talents of silver.

7 But a man of God came to him and said, “O king, do not let the army of Israel go with you, for the LORD is not with Israel—not with any of the Ephraimites.

8 Even if you go and fight bravely in battle, God will make you stumble before the enemy, for God has power to help and power to overthrow.”

9 Amaziah asked the man of God, “What should I do about the hundred talents I have given to the army of Israel?” And the man of God replied, “The LORD is able to give you much more than this.”

10 So Amaziah dismissed the troops who had come to him from Ephraim and sent them home. And they were furious with Judah and returned home in great anger.

11 Amaziah, however, summoned his strength and led his troops to the Valley of Salt, where he struck down 10,000 men of Seir,

12 and the army of Judah also captured 10,000 men alive. They took them to the top of a cliff and threw them down so that all were dashed to pieces.

13 Meanwhile the troops that Amaziah had dismissed from battle raided the cities of Judah, from Samaria to Beth-horon. They struck down 3,000 people and carried off a great deal of plunder.

Read all of 2 Chronicles 25