This discovery was to Fox what the unfolding of the great doctrine of justification by faith was to Luther. It was not only the commencement of a new life, it was the theme of his life-long ministry, and the special message which he was raised up to deliver to the world. In neither case was there the revelation of a new truth, only an old truth was to be emphasized, and to take its right place in the minds and hearts of men. To this grand truth, that Christ is still with us to guide us by His Holy Spirit into all truth, Fox henceforth trusted to clear up all doubts, and to unfold all truths, and to explain the Holy Scriptures. So in our day has Mr. Moody set forth prayer as the all-sufficient practical commentator on the Bible. Henceforth, Fox expected Divine prompting to every service and Divine guidance in its performance, and without these he would not move. He had already been convinced of several points afterwards prominent in Quakerism, especially that no place or building can properly be called "holy ground," and that a University training was not a sufficient qualification for the ministry. As to the last point, just as the modern Quaker apostle, Stephen Grellet, said he could no more make a sermon than he could make a world, so did Fox protest against a man-made minister. As he was ever the enlightened and persistent advocate of sound education, this contention must not be mistaken for a contempt of human learning in its right place. It was but an emphatic assertion that the only availing spiritual knowledge comes not through human teaching but through the teaching of the Holy Spirit; and that, on the other hand, where He calls a man to the office of the ministry, the absence of a scholastic training was an utterly insufficient reason for interfering with the call. The abundant blessing which attended the preaching of Fox, Bunyan and other "unlearned and ignorant men," gave emphasis to this doctrine in that age. To these views the other Quaker "testimonies" were speedily added, and soon the whole scheme of doctrine was complete in his mind.