2 Chronicles 26:1, 3-4

Then all the people of Judah made Uzziah king in place of his father Amaziah. Uzziah was sixteen years old.

Uzziah was sixteen years old when he became king, and he ruled fifty-two years in Jerusalem. His mother’s name was Jecoliah, and she was from Jerusalem. He did what the LORD said was right, just as his father Amaziah had done.