Abijah set the battle in array against Jeroboam. We need not scrupulously inquire into the lawfulness of this war, for this Abijah, though here he makes a fair flourish, and maintained the better cause, yet was indeed an ungodly man, 1 Kings 15:3, and therefore minded not the satisfaction of his conscience, but only the recovery of his parent's ancient dominions.
Related Commentaries of 2 Chronicles 13:3
2 Chronicles 13:3
3 And Abijah set the battle in array with an army of valiant men of war, even four hundred thousand chosen men: Jeroboam also set the battle in array against him with eight hundred thousand chosen men, being mighty men of valour.