2 Kings 21:1

Manasseh was twelve years old when he became king, and he reigned fifty-five years in Jerusalem. His mother's name was Hephzibah.

Surrounding context

21:1 Manasseh was twelve years old when he became king, and he reigned fifty-five years in Jerusalem. His mother's name was Hephzibah.

21:2 And he did evil in the sight of the LORD, according to the abominations of the nations whom the LORD had cast out before the children of Israel.