At that time Hazael king of Aram marched up and fought against Gath and captured it. Then he decided to attack Jerusalem.
When Joash had revolted from God and become both an idolater and a persecutor the hand of the Lord went out against him, and his last state was worse than his first. I. His wealth and honour became an easy prey to his neighbours.
Commenting on 2 Kings 12:17-21
For Jozachar the son of Shimeath,.... Said to be an Ammonitess, and this man's name Zabad, Ch2 24:26, and Jehozabad the son of Shomer, his servants; who is said in the same place to be the son of Shimrith a Moabitess: these smote him, and he died; justly did he fall by the hands of such persons for his idolatry: and they buried him with...
Then Hazael . . . fought against Gath--(See on Ch2 24:23).