What does 2 Chronicles 29:1 mean?

Hezekiah was twenty-five when he became king, and he ruled in Jerusalem for twenty-nine years. His mother was Abijah, daughter of Zechariah. 2 Chronicles 29:1 - Modern Text Bible

(Hezekiah’s background is introduced, including his age, reign, and family. This sets up his story as a new beginning after Ahaz.)