“Man’s extremity is God’s opportunity” is the theological way of putting this fact of the need of self-surrender; whilst the physiological way of stating it would be, “Let one do all in one’s power, and one’s nervous system will do the rest.”
Both statements acknowledge the same fact.
To state it in terms of our own symbolism: When the new centre of personal energy has been subconsciously incubated so long as to be just ready to open into flower, “hands off” is the only word for us, it must burst forth unaided!
We have used the vague and abstract language of psychology. But since, in any terms, the crisis described is the throwing of our conscious selves upon the mercy of powers which, whatever they may be, are more ideal than we are actually, and make for our redemption, you see why self-surrender has been and always must be regarded as the vital turning-point of the religious life, so far as the religious life is spiritual and no affair of outer works and ritual and sacraments. One may say that the whole development of Christianity in inwardness has consisted in little more than the greater and greater emphasis