His army was greatly inferior. But this he regards not. He pleads right, as descended from David; whereas Jeroboam is an usurper. The covenant of salt should seem to imply a covenant with sacrifice. For every sacrifice is salted with salt. David, with an eye to Christ, had so expressed himself, Psalms 50:5. It is precious to see so much of Jesus in the general circumstances of the people in those remote ages. By Abijah standing upon mount Ephraim, it is clear that he had penetrated pretty far into the heart of Jeroboam's dominions.
Related Commentaries of 2 Chronicles 13:3
2 Chronicles 13:3-5
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.
4 And Abijah stood up upon mount Zemaraim, which is in mount Ephraim, and said, Hear me, thou Jeroboam, and all Israel;
5 Ought ye not to know that the LORD God of Israel gave the kingdom over Israel to David for ever, even to him and to his sons by a covenant of salt?