I Kings 15:6

"And there was war between Rehoboam and Jeroboam all his life;" i.e., the state of hostility which had already existed between Rehoboam and Jeroboam continued "all the days of his life," or so long as Abijam lived and reigned. If we take חיּיו כּל־ימי in this manner (not כּל־ימיהם, Kg1 15:16), the statement loses the strangeness which it has at first sight, and harmonizes very well with that in Kg1 15:7, that there was also war between Abijam and Jeroboam. Under Abijam it assumed the form of a serious war, in which Jeroboam sustained a great defeat (see 2 Chron 13:3-20). - The other notices concerning Abijam in Kg1 15:7, Kg1 15:8 are the same as in the case of Rehoboam in Kg1 14:29, Kg1 14:31.

In this chapter we have an abstract of the history, I. Of two of the kings of Judah, Abijam, the days of whose reign were few and evil (Kg1 15:1-8), and Asa, who reigned well and long (v. 9-24). II. Of two of the kings of Israel, Nadab the son of Jeroboam, and Baasha the destroyer of Jeroboam's house (Kg1 15:25-34).

15:6 Abijam inherited the hostility between the northern and southern kingdoms. Like Rehoboam (14:30), he faced war with Jeroboam. During one notable battle (2 Chr 13:2-20), when Abijam and his outnumbered forces were surrounded by northern troops, they cried out to the Lord; God delivered them and enabled them to inflict a severe defeat on Jeroboam.