2 Chronicles 15:7,8

2 Chronicles 15:7,8 (KJV)
7 Be ye strong therefore, and let not your hands be weak: for your work shall be rewarded.
8 And when Asa heard these words, and the prophecy of Oded the prophet, he took courage, and put away the abominable idols out of all the land of Judah and Benjamin, and out of the cities which he had taken from mount Ephraim, and renewed the altar of the Lord, that was before the porch of the Lord.

How Revival Begins

They knew that they were not walking in the ways of the Lord and were sorry. Therefore, they made an oath to God, to seek Him with their whole heart.