“King Jotham was twenty-five years old when he began to reign. He reigned sixteen years in Jerusalem. His mother’s name was Jerushah daughter of Zadok. He did what was right in the sight of the Yahweh just as his father King Uzziah had done. However, he did not invade the temple of Yahweh. However, the people still followed corrupt practices.”
Now we are back to 2 Kings, chapter 15. King Jotham had actually been the caretaker of the Judah kingdom while his father suffered from leprosy. He was only 25 when his father died, but it is not clear how long his father had leprosy. He took over the crown and ruled for another 16 years so he would have died at age 41. His mother Jerushah or Jerusha is only mentioned here and nowhere else. There were 4 other people with the name of Zadok in the biblical literature. Since he had assisted his father while he was still alive, he was considered a good king, like his father. However, he did not enter the Temple like his father when he was struck with leprosy. But like his father, the people still followed the corrupt practices of the high places of non-Yahweh worship in Judah, even though there is no explicit mention of the high places like in 2 Kings.