Jehoahaz was a king of Judah. His birth name was Shallum. He is thought to be an evil king. Jehoahaz began his rule at age 23 in 609 BC when his father, King Josiah was killed by the king of Egypt. Necho. He only ruled for 3 months in Jerusalem before the Egyptian king took him to Egypt and put another of Josiah's sons on the throne as the new King of Judah. Jehoahaz died in Egypt.