Then the word of the LORD came to Jehu the son of Hanani against Baasha, saying,
Read Chapter 16
Ephrem The Syrian
[Baasha] was appointed king by God and was sent to restore the true religion which had been destroyed by Jeroboam and his successor Nadab, and to take revenge on the evil that was committed as well as impiety. He was certainly able to accomplish in the best possible way his first task, as he completely erased the progeny of both Jeroboam and Nadab. However, with regard to his second task, he promoted their impiety by perversely and foolishly worshiping the idols of both [his predecessors] and did not destroy at all the calves made by Jeroboam but incited his own subjects to adore them. Therefore the prophet Jehu harshly condemns the crime of Baasha’s ungrateful soul in this passage and proclaims the revenge which will strike him shortly. So Baasha was deprived of his kingdom and life for this reason, and after the killing of Elah, his son and successor, in the second year of his reign, Zimri took hold of the power and kept it for seven days, as is written. Then he was put under siege b...
Jehu was different from one of the same name and parentage, who came to Josaphat; (2 Paralipomenon xix. 2.; Du Hamel; Tirinus) though, if Baasa did not put him to death, as there is some reason to doubt, he might be the same, ver. 7. (Calmet)
Hanani had been sent to Asa, 2 Paralipomenon xvi. 7. (Abulensis, q. 3.)