After this Jehoshaphat king of Judah joined himself with Ahaziah king of Israel. The same did very wickedly:

Then Eliezer the son of Dodavahu of Mareshah prophesied against Jehoshaphat, saying, "Because you have joined yourself with Ahaziah, the LORD has destroyed your works." The ships were broken, so that they were not able to go to Tarshish.

The inhabitants of Jerusalem made Ahaziah his youngest son king in his place; for the band of men who came with the Arabians to the camp had slain all the eldest. So Ahaziah the son of Jehoram king of Judah reigned.

Ahaziah was twenty-two years old when he began to reign, and he reigned one year in Jerusalem. And his mother's name was Athalih, the daughter of Omri.

He returned to be healed in Jezreel of the wounds which they had given him at Ramah, when he fought against Hazael king of Syria. Ahaziah the son of Jehoram king of Judah went down to see Jehoram the son of Ahab in Jezreel, because he was sick.

Now the destruction of Ahaziah was of God, in that he went to Joram: for when he had come, he went out with Jehoram against Jehu the son of Nimshi, whom the LORD had anointed to cut off the house of Ahab.

It happened, when Jehu was executing judgment on the house of Ahab, that he found the princes of Judah, and the sons of the brothers of Ahaziah, ministering to Ahaziah, and killed them.

He sought Ahaziah, and they caught him (now he was hiding in Samaria), and they brought him to Jehu, and killed him; and they buried him, for they said, "He is the son of Jehoshaphat, who sought the LORD with all his heart." The house of Ahaziah had no power to hold the kingdom.

Now when Athaliah the mother of Ahaziah saw that her son was dead, she arose and destroyed all the royal family of the house of Judah.

But Jehoshabeath, the daughter of the king, took Joash the son of Ahaziah, and stole him away from among the king's sons who were slain, and put him and his nurse in the bedroom. So Jehoshabeath, the daughter of king Jehoram, the wife of Jehoiada the priest (for she was the sister of Ahaziah), hid him from Athaliah, so that she did not kill him.