"Sanctification goes farther than the external. It is more deeply rooted than the dress, the mannerisms, or the conduct. Sanctification is centered in the heart. The test of sanctification, then, is more than the slamming of doors, the length of the skirt, and the paying of tithes. The test is: Do I exemplify Christ in my spirit, my attitudes, and my motives? I'm sure you have seen some adult rebuke an adolescent when the spirit the elder showed was far worse than the misdemeanor of the youngster. Sanctification takes away that critical spirit, that lazy attitude, the wrong motive, the ugly character, and deposits in its place a spirit of divine love."
(What Is Sanctification?, Leslie Parrott, pg. 15)