1 Kings 15:32

And there was war between Asa and Baasha king of Israel all their days. For being a wicked man, and an idolater, Asa had no respect for him, though he had slain the family of Jeroboam; nor had Baasha any regard to Judah, nor to the worship of God at Jerusalem, so that there was no good understanding between them, but frequent acts of hostility, see 1 Kings 15:16.