23 And Joash king of Israel captured Amaziah king of Judah, the son of Joash, son of Ahaziah, at Beth-shemesh, and brought him to Jerusalem and broke down the wall of Jerusalem for 400 cubits, from the Ephraim Gate to the Corner Gate. 24 And he seized all the gold and silver, and all the vessels that were found in the house of God, in the care of Obed-edom. He seized also the treasuries of the king's house, also hostages, and he returned to Samaria. 25 Amaziah the son of Joash, king of Judah, lived fifteen years after the death of Joash the son of Jehoahaz, king of Israel. 26 Now the rest of the deeds of Amaziah, from first to last, are they not written in the Book of the Kings of Judah and Israel? 27 From the time when he turned away from the Lord they made a conspiracy against him in Jerusalem, and he fled to Lachish.
As we read through Kings and Chronicles, we need to constantly pay attention as the historian switches back and forth between the Southern kingdom, Judah, or "house of David," and the Northern Kingdom, Israel, which rebelled and established their own religion. With the latter, Israel, we usually see their kings "did evil in the sight of the Lord," and thereby their nation fell sooner. But sometimes, like above, we see God using the Northern Kingdom to chastise the Southern Kingdom. Why? He turned away from the Lord. Lest we become complacent, thinking we are better than pagans around us, God often uses them to keep us straight.