Transforming power… the New Testament indicates that the transforming power of regeneration is total. It meets our needs at every point. This is not to say that regeneration produces perfection. But just as total depravity means sin has influenced every area of our lives, so grace reaches into every aspect of our experience where the ravages of sin first ventured. It is through the new birth that the image of God, like an embryo in the womb, is restored. It then begins to grow to the full maturity of the later stages of Christian experience. …In regeneration the mind is illuminated… the heart is purified…the desires are renewed… we begin to live a new life!
(The Christian Life, Ch6, Sinclair Ferguson)