1 Kings 14:29,30

Are they not written, &c. A register was kept of the acts of the kings of Judah, as well as of those of the kings of Israel. And there was war, &c. But how does this agree with 1 Kings 12:23, &c., where God forbids Rehoboam and his people to go up and fight against their brethren? We must observe, that though the Jews were forbidden to make war upon the Israelites, they were not forbidden to defend themselves, in case the Israelites should make war on them. “And considering that they were now become two rival nations, they might, upon the borders, be continually endeavouring to gain ground upon each other, and so run into frequent acts of hostility, without ever once engaging in a pitched battle.” Dodd.