577. It follows from this that the Lord is constantly active in regenerating us. He is constantly active in saving us, and no one can be saved without being regenerated, as the Lord himself says in John: "Those who are not born again cannot see the kingdom of God" (John 3:3, 5-6). Regeneration is therefore the means of being saved; and goodwill and faith are the means of being regenerated.
The notion that we are regenerated as a consequence of simply having the faith that is preached by the church of today - a faith that involves no cooperation on our part - is the height of foolishness.
[2] The kind of action and cooperation just described is visible in action and movement of all types. The interaction between the heart and all its arteries is an example. The heart acts and the arteries use their sheaths and linings to cooperate; this results in circulation. A similar thing happens with the lungs. The air pressure, which depends on the height of the atmosphere above it, acts upon the lungs; the lungs work the ribs, which is immediately followed by the ribs working the lungs. This breathing motion affects every membrane in the body. The meninges of the brain, the pleura, the peritoneum, the diaphragm, and all the other membranes that cover the internal organs and inwardly hold them together, act and react and cooperate in this way, because they are flexible. Together these movements provide for our continued existence.
A similar thing happens in every fiber and nerve and in every muscle. In fact it even occurs in every piece of cartilage. It is well documented that in each of these there is an [initiating] action and then a cooperation.
[3] Such cooperation also exists in all our bodily senses. Just like the motor organs, the sensory organs consist of fibers, membranes, and muscles; but there is no need to describe the cooperation of each one. It is well known that light acts upon the eye, sound upon the ear, odor upon the nose, taste upon the tongue; and that the organs adapt themselves to that input, which results in sensation.
Surely everyone can see from these examples that thought and will could not exist unless there was a similar action and cooperation between life as it inflows and the spiritual organic structure underlying our brain. Life flows from the Lord into that organic structure. Because the organic structure cooperates, it perceives what it is thinking. Likewise it perceives what is under consideration there, what conclusion is formed, and what action it has decided to take. If the life force alone took action but we did not cooperate (seemingly on our own), our ability to think would not exceed a log's. We would have no more thought than a church building does when a minister is preaching; the church can indeed feel the reverberation of sound coming through the double doors as an echo, but it cannot appreciate anything about the sermon. We would be no different if we did not cooperate with the Lord in developing goodwill and faith.