Second Kings 15 and 16 cover the reigns of Azariah, Jotham, and Ahaz over Judah and the reigns of Zechariah, Shallum, Menahem, Pekahiah, and Pekah over Israel.
At the age of sixteen, Azariah (Uzziah) began to reign over Judah in the twenty-seventh year of Jeroboam king of Israel and reigned for fifty-two years in Jerusalem (15:1-2; 14:21).
Azariah did what was right in the sight of Jehovah, according to all that his father Amaziah had done. But Azariah did not remove the high places, and the people still sacrificed and burned incense in the high places (15:3-4).
Due to his trespass in touching the priestly service, Azariah was stricken by Jehovah so that he became a leper until the day of his death (v. 5a; 2 Chron. 26:16-21). He did not keep God's ordinance that only the priests ordained by God could participate in the priestly service. Azariah overstepped and touched the priestly service. This was a great offense to God, and it led to Azariah's becoming a leper.
Azariah's son, having become the acting king, was over the household and judged the people of the land (2 Kings 15:5b).
After the death of his father Amaziah, Azariah built up Elath and restored it to Judah (14:22).
Azariah slept with his fathers and was buried with his fathers in the city of David. He was succeeded by his son Jotham (15:6-7).