This happens when you are loyal to God.
Read: 2 Kings 18:5-8
Hezekiah trusted in the Lord, the God of Israel. There was no one like him among all the kings of Judah, either before or after his time. 6 He remained faithful to the Lord in everything, and he carefully obeyed all the commands the Lord had given Moses. 7 So the Lord was with him, and Hezekiah was successful in everything he did. He revolted against the king of Assyria and refused to pay him tribute. 8 He also conquered the Philistines as far distant as Gaza and its territory, from their smallest outpost to their largest walled city.