8 Zechariah son of Jeroboam II began to rule over Israel in the thirty-eighth year of King Uzziah's reign in Judah. He reigned in Samaria six months. 9 Zechariah did what was evil in the Lord 's sight, as his ancestors had done. He refused to turn from the sins that Jeroboam son of Nebat had led Israel to commit. 10 Then Shallum son of Jabesh conspired against Zechariah, assassinated him in public, and became the next king. 11 The rest of the events in Zechariah's reign are recorded in 12 So the Lord 's message to Jehu came true: "Your descendants will be kings of Israel down to the fourth generation."
13 Shallum son of Jabesh began to rule over Israel in the thirty-ninth year of King Uzziah's reign in Judah. Shallum reigned in Samaria only one month. 14 Then Menahem son of Gadi went to Samaria from Tirzah and assassinated him, and he became the next king. 15 The rest of the events in Shallum's reign, including his conspiracy, are recorded in 16 At that time Menahem destroyed the town of Tappuah and all the surrounding countryside as far as Tirzah, because its citizens refused to surrender the town. He killed the entire population and ripped open the pregnant women.
Matthew Henry's Commentary on 2 Kings 15:8-16
Commentary on 2 Kings 15:8-31
(Read 2 Kings 15:8-31)
This history shows Israel in confusion. Though Judah was not without troubles, yet that kingdom was happy, compared with the state of Israel. The imperfections of true believers are very different from the allowed wickedness of ungodly men. Such is human nature, such are our hearts, if left to themselves, deceitful above all things, and desperately wicked. We have reason to be thankful for restraints, for being kept out of temptation, and should beg of God to renew a right spirit within us.