The sinner is dead in trespasses and sins, and can no more quicken himself than he can create a world. His heart is bound fast with the grave-clothes of worldly and fleshly lusts, and only Omnipotence can raise it into communion with God.
Divine power was needed to create, but much greater power is required to regenerate a soul: creation is only the bringing of something out of nothing, but regeneration is the transforming not only of an unlovely object, but of one that resists with all its might the gracious designs of the heavenly Potter.
Rightly did Thomas Goodwin the Puritan say, “A wolf will sooner marry a lamb, or a lamb a wolf, than ever a carnal heart be subject to the law of God, which was the ancient husband of it (Romans 7:6). It is the turning of one contrary into another. To turn water into wine, there is some kind of symbolizing, yet that is a miracle. But to turn a wolf into a lamb, to turn fire into water, is a yet greater miracle.
Pink, A.W. (2010-07-26). Practical Christianity