2 Chronicles 13:5-7, 17

Do you not know that the LORD God of Israel, gave rule over Israel forever to David and to his sons by a covenant of salt [a permanent pact, extending to each generation of Israel]? [Num 18:19] Yet Jeroboam the son of Nebat, a servant of Solomon the son of David, rose up and rebelled against his lord [the king], and worthless (unprincipled, unethical) men gathered around him, useless and wicked men, who proved too strong for Rehoboam the son of Solomon when Rehoboam was young and timid, and could not assert himself against them.

Abijah and his people inflicted on them a great defeat, so that 500,000 chosen men of Israel fell slain.