Baasha becomes king of Israel
Baasha became king of Israel, and killed all the house of Jeroboam. He reigned at Tirzah.
Key passages
1 Ki 15:28–30

and Baasha killed him in the third year of Asa the king of Judah, and he reigned in his place. It happened that as soon as he became king, he killed all of the house of Jeroboam. There was no one left of Jeroboam who breathed, until he had destroyed him according to the word of Yahweh that he …

1 Ki 15:33

In the third year of Asa king of Judah, Baasha son of Ahijah had become king over all of Israel; he lived in Tirzah twenty-four years.

See also