Ephesians 5:9-13

(for the fruit of the light is in all goodness and righteousness and truth), proving what is well-pleasing unto the Lord; and have no fellowship with the unfruitful works of darkness, but rather even reprove them; for the things which are done by them in secret it is a shame even to speak of. But all things when they are reproved are made manifest by the light: for everything that is made manifest is light.