Abijah begins to reign over Judah in the eighteenth year of King Jeroboam and reigns three years in Jerusalem. His mother is Micaiah, daughter of Uriel of Gibeah. There is war between Abijah and Jeroboam. Abijah goes out with an army of four hundred thousand chosen men, and Jeroboam draws up his battle line with eight hundred thousand warriors.
Abijah stands on Mount Zemaraim, in the hill country of Ephraim, and speaks to Jeroboam and all Israel. He reminds them that the Lord gave the kingdom of Israel to David and his sons by a covenant of salt, and that Jeroboam, a servant of Solomon, rebelled and gathered worthless and wicked men who overpowered Rehoboam when he was young. Now Israel trusts in a multitude and in the golden calves Jeroboam made, has driven out the Lord's priests and made priests for itself like the peoples of other lands. By contrast, Abijah says, the Lord is our God, we have priests who are sons of Aaron and Levites, we burn burnt offerings and incense every morning and evening, and we keep the bread on the table and the golden lampstand. God is with us as our head, so do not fight against the Lord, for you will not succeed.
Jeroboam has set an ambush, and Judah finds itself attacked from front and rear. They cry out to the Lord, the priests blow the trumpets and the men of Judah shout. God defeats Jeroboam and all Israel before Abijah and Judah. Five hundred thousand chosen men of Israel fall, and the men of Judah prevail because they relied on the Lord, the God of their fathers. Abijah takes Bethel, Jeshanah and Ephron with their villages. Jeroboam does not recover his strength, and the Lord strikes him and he dies. Abijah grows mighty, takes fourteen wives and has twenty-two sons and sixteen daughters.