[God] penetrates into the inmost being of man, opens the closed heart, softens the hard heart, and circumcises the heart that is uncircumcised. He infuses new qualities into the will, making the dead will alive, the evil one good, the unwilling one willing, and the stubborn one compliant; He activates and strengthens the will so that, like a good tree, it may be enabled to produce the fruits of good deeds.