“King Omri did what was evil in the sight of Yahweh. He did more evil than all who were before him. He walked in all the ways of Jeroboam son of Nebat, and in the sins that he caused Israel to commit, provoking Yahweh the God of Israel, to anger by their idols. Now the rest of the acts of King Omri that he did, and the power that he showed, are they not written in the Book of the Annals of the Kings of Israel? King Omri slept with his ancestors. He was buried in Samaria. His son Ahab succeeded him.”
Notice that King Asa of Judah has lived through 6 different kings in Israel, Jeroboam, Nadab, Baasha, Elah, Zimri, and Omri, with at least 4 different families Jeroboam and his son, Baasha and his son, Zimri, and now Omri with his son Ahab. You can compare the stability of Judah with the instability of Israel. King Omri walked in the evil ways of Jeroboam. He, of course, was worst than all who went before him. Notice that King Omri is the first king to be buried in Samaria. He perhaps was more famous at his time than the biblical writer indicated. Extra biblical sources indicate he ruled over Moab.