Now Zerah the Ethiopian came out against them with an army of a million men and 300 chariots, and he came to Mareshah.
So Asa went out to meet him, and they drew up in battle formation in the valley of Zephathah at Mareshah.
Then Asa called to the LORD his God and said, "LORD, there is no one besides You to help [in the battle] between the powerful and those who have no strength; so help us, O LORD our God, for we trust in You, and in Your name have come against this multitude. O LORD, You are our God; let not man prevail against You."
So the LORD routed the Ethiopians before Asa and before Judah, and the Ethiopians fled.