Matthew Henry on 2 Chronicles 13:13–end
We do not find that Jeroboam offered to make any answer at all to Abijah's speech. Though it was much to the purpose, he resolved not to heed it, and therefore he heard it as though he heard it not. He came to fight, not to dispute. The longest sword, he thought, would determine the matter, not the better cause. Let us therefore see the issue, whether right and religion carried the day or no.
I. Jeroboam, who trusted to his politics, was beaten. He was so far from fair reasoning that he was not for fair fighting. We may suppose that he felt a sovereign contempt for Abijah's harangue. "One stratagem," thinks he, "is worth twenty such speeches; we will soon give him an answer to all his argume…
Read the whole note in the consoleJamieson-Fausset-Brown on 2 Chronicles 13:13
But Jeroboam caused an ambushment to come about behind them--The oration of Abijah, however animating an effect it might have produced on his own troops, was unheeded by the party to whom it was addressed; for while he was wasting time in useless words, Jeroboam had ordered a detachment of his men to move quietly round the base of the hill, so that when Abijah stopped speaking, he and his followers found themselves surprised in the rear, while the main body of the Israelitish forces remained in front. A panic might have ensued, had not the leaders "cried unto the Lord," and the priests "sounded with the trumpets"--the pledge of victory (Num 10:9; Num 31:6). Reassured by the well-known signal…
Read the whole note in the consoleAdam Clarke on 2 Chronicles 13:13
But Jeroboam caused an ambushment - While Abijah was thus employed in reproving them, Jeroboam divided his army privately, and sent a part to take Abijah in the rear; and this must have proved fatal to the Jews, had not the Lord interposed.
John Gill on 2 Chronicles 13:15
Then the men of Judah gave a shout,.... Taking heart at the sound of the trumpets, and in order to encourage one another, and intimidate the enemy; See Gill on 1 Samuel 17:20,
and as the men of Judah shouted, it came to pass, that God smote Jeroboam and all Israel before Abijah and Judah; possessed them with a panic, so that they fled at once, as follows.