Gracious affections arise from those operations and influences which are spiritual, and that the inward principle from whence they flow, is something divine, a communication of God, a participation of the divine nature, Christ living in the heart, the Holy Spirit dwelling there, in union with the faculties of the soul, as an internal vital principle, exerting his own proper nature in the exercise of those faculties. This is sufficient to show us why true grace should have such activity, power, and efficacy. No wonder that what is divine, is powerful and effectual; for it has omnipotence on its side. If God dwells in the heart, and be vitally united to it, he will show that he is a God by the efficacy of his operation. Christ is not in the heart of a saint as in a sepulchre, as a dead saviour that does nothing; but as in his temple, one that is alive from the dead. For in the heart where Christ savingly is, there he lives, and exerts himself after the power of that endless life, that he received at his resurrection. Thus every saint who is the subject of the benefit of Christ’s sufferings, is made to know and experience the power, of his resurrection.
~Jonathan Edwards~
The Works of Jonathan Edwards Vol. 1 (Peabody, MA; Hendrickson Publishers, Inc; 2007) p. 316.