In the third year of the reign of Hoshea son of Elah as king of Israel, Hezekiah son of Ahaz became king of Judah
at the age of twenty-five, and he ruled in Jerusalem for twenty-nine years. His mother was Abijah, the daughter of Zechariah.
Following the example of his ancestor King David, he did what was pleasing to the Lord.
He destroyed the pagan places of worship, broke the stone pillars, and cut down the images of the goddess Asherah. He also broke in pieces the bronze snake that Moses had made, which was called Nehushtan. Up to that time the people of Israel had burned incense in its honor. 1
References for 2 Kings 18:4
Hezekiah trusted in the Lord, the God of Israel; Judah never had another king like him, either before or after his time.
He was faithful to the Lord and never disobeyed him, but carefully kept all the commands that the Lord had given Moses.
So the Lord was with him, and he was successful in everything he did. He rebelled against the emperor of Assyria and refused to submit to him.
He defeated the Philistines and raided their settlements, from the smallest village to the largest city, including Gaza and its surrounding territory.