2 Chronicles 13:5-7, 17

Ought you not to know that the LORD God of Israel gave the kingship over Israel forever to David and his sons by a covenant of salt? Yet Jeroboam the son of Nebat, a servant of Solomon the son of David, rose up and rebelled against his lord, and certain worthless scoundrels gathered about him and defied Rehoboam the son of Solomon, when Rehoboam was young and irresolute and could not withstand them.

Abijah and his people struck them with great force, so there fell slain of Israel 500,000 chosen men.