Of course others have doubted this. It may be said that what Paul saw was only a vision, and that therefore his new life was founded on a mistake. I believe his own account to be the correct one; but perhaps we need not dogmatize too much about what he saw; because it was not in reality on any theory of this vision that his faith was founded. It was not because he saw Christ that day with the bodily eye, or believed he did so, that he became or continued a Christian; it was because, trusting Christ, thus revealed, he obtained that for which he had all his life been longing: he was no longer banished or kept at a distance, but brought nigh to God; he was reconciled, and the love of God was shed abroad in his heart. He had all his lifetime been asking in despair, "What must I do to be saved?" but now he was saved. The humiliating bondage in which his spiritual nature had been held was dissolved, and, following Christ, he advanced from victory to victory. This is the test of all conversions; it is the best evidence of Christianity; and it is the power of preaching. We believe in Christ not only because there is sufficient historical evidence that He existed eighteen hundred years ago and did such acts as proved that He was sent from God, but because He proves Himself to be living now by the transformation which He brings to pass in those who put their trust in Him. We are certain that there is a Saviour, because He has saved ourselves. I am happy to see that this evidence of our religion is at present coming again to the front. One of your younger scholars, Dr. Stearns of Bangor, Maine, has developed it, in a book just published, with great breadth of theological knowledge; and a former Yale lecturer, Dr. Dale of Birmingham, has given a telling exposition of it at the same time.[49] This is the vital force of preaching. We are witnesses to Christ--not merely to a Christ who lived long ago and did wonders, but to a Christ who is alive now and is still doing moral miracles. And the virtue of any man's testimony lies in his being able to say that he has himself seen the Christ whom he preaches to others, and himself experienced the power which he recommends others to seek.