Ahaz was twenty years old when he became king, and he reigned in Jerusalem sixteen years. And unlike David his father, he did not do what was right in the eyes of the LORD his God.
Jewish Publication Society of America Version (JPS1917) - 2 Kings 16:2 >Twenty years old was Ahaz when he began to reign; and he reigned sixteen years in Jerusalem; and he did not that which was right in the eyes of the LORD his God, like David his father.