2 Kings 18:2

He was twenty-five years old when he began to reign, and he reigned twenty-nine years in Jerusalem. His mother's name also was Abi, the daughter of Zachariah.

2 Chronicles 29:1-2

Hezekiah began to reign when he was twenty-five years old, and he reigned twenty-nine years in Jerusalem. His mother's name was Abijah, the daughter of Zechariah.

Treasury of Scripture Knowledge did not add