Multitudes seem to think that it is about as easy for a sinner to purify his heart (James 4:8), as it is to wash his hands; to admit the searching and flesh-withering light of Divine truth into the soul, as the morning sun into his room by pulling up the blinds; to turn from idols to God, from the world to Christ, from sin to holiness, as it is to turn a ship right round by the help of her helm.  O my reader, be not deceived on this vital matter: to mortify the lusts of the flesh, to be crucified unto the world, to overcome the Devil, to die daily unto sin, and live unto righteousness, to be meek and lowly in heart, trustful and obedient, pious and patient, faithful and uncompromising, loving and gentle; in a word, to be a Christian, to be Christlike, is a task far, far beyond the poor resources of fallen human nature. (Arthur W. Pink, Studies on Saving Faith)