In the prayer of the Christian church there is a sentence, "Thy will be done, on earth as it is in heaven." This gives a great key to metaphysics. It gives a hint to the seer that His will, which is easily done in heaven, has difficulty being done on earth. Who stands against His will? Man. Where lies the will of God? In the innermost being of man. And what stands as an obstacle? The surface of the heart of man. This means struggle in man himself. In him there is the will of God and in him there is an obstacle. In the sphere within him is the will of God, as in heaven; where there is an obstacle to it, that is the earth.