2 Chronicles 26:4-6

4He did what was right in the eyes of the Lord, just as his father Amaziah had done.

5He sought God during the days of Zechariah, who instructed him in the fear of God. As long as he sought the Lord, God gave him success.

6He went to war against the Philistines and broke down the walls of Gath, Jabneh and Ashdod. He then rebuilt towns near Ashdod and elsewhere among the Philistines.