“When King Jehoram had ascended the throne of his father and was established, he put all his brothers to the sword, and also some of the officials of Israel. King Jehoram was thirty-two years old when he began to reign. He reigned eight years in Jerusalem. He walked in the way of the kings of Israel, as the house of King Ahab had done. The daughter of King Ahab was his wife. He did what was evil in the sight of the Yahweh. Yet Yahweh would not destroy the house of David, because of the covenant that he had made with David. He had promised to give a lamp to him and to his descendents forever.”
This section is based on 2 Kings, chapter 8. This is almost word for word except for the beginning additional notice that he killed all 6 of his brothers. This almost sound like what King Jehu of Israel did to the family of King Ahab, which now includes this King Jehoram. In 2 Kings it merely mentioned that he walked in the evil ways of the Israelite kings. King Jehoram was 32 when he began to rule and he ruled for 8 years, so he died at the age of 40, not too old. This became the time of the 2 kings named Jehoram that lasted 8 years since they both died about 841 BCE. One was king in Israel and the other king in Judah. Not only did they have the same names, they were brothers-in-law. This King Jehoram in Judah had married the sister of King Jehoram in Israel, another son of King Ahab of Israel. However, Yahweh did not destroy King Jehoram of Judah because he had promised David a descendent forever.