Jehoash king of Judah took all the sacred gifts that Jehoshaphat and Jehoram and Ahaziah his fathers, the kings of Judah, had dedicated, and his own sacred gifts, and all the gold that was found in the treasuries of the house of the LORD and of the king’s house, and sent these to Hazael king of Syria. Then Hazael went away from 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
And Jehoash king of Judah took all the hallowed things that Jehoshaphat, and Jehoram, and Ahaziah, his fathers, kings of Judah, had dedicated, and his own hallowed things, and all the gold [that was] found in the treasures of the house of the LORD, and in the king's house, and sent [it] to Hazael king of Syria: and he went away from Jerusalem.
Took all the hallowed things - He dearly bought a peace which was of short duration, for the next year Hazael returned, and Jehoash, having no more treasures, was obliged to hazard a battle, which he lost, with the principal part of his nobility, so that Judah was totally ruined, and Jehoash shortly after slain in his bed by his own servants; Ch2 24:23.