It might be, not including God's, that the heart is the deepest thing in the universe. We can hardly spend too much time on the heart. The heart is the very center of the human spirit.

We must enter into something of what is involved in the interior of the heart of the human spirit. We certainly will not be able to go very deeply into this matter because the heart has such a depth that it defies a complete scrutiny on our part. However, we should at least face the matters as we are able to gain them from the Word of God. We should include certain aspects as we can.

God is never the source of evil in the heart of man. The inner arena belongs to the human spirit. Neither can Satan take the heart, the way it is, away from that human spirit. Man himself is responsible for his heart and the condition of his heart.

We believe the heart is crucial to and for Christianity. We would not naturally think that the heart of the human spirit, of itself, is the source of the capacities for the impulses, passions, emotions, etc. But these things come with a heart in a human spirit—they were given by creation and natural theology, and the heart of the human spirit is responsible for the way the impulses, passions, emotions, etc., go. Some words need to be superimposed to touch this matter. The heart must have prevenient grace to be enabled to turn to God, to seek God, to believe in God, to want to get his heart right with God, to be forgiven, to be regenerated, born again, to tame or restrain the heart, to teach grace, and to deal with the heart about its great needs. Either Christian truth comes, is found for the heart, or Christianity is found wanting within its own claim and power. Gods prevenient grace must always go before every man and everything he does. There is nothing in the heart itself that makes it right within itself. The heart is not beyond the reach in its identity and need; it is the very center of the moral agency of the human spirit.