Christ was the only teacher among men who never made a mistake. After nearly two thousand years, during which His teaching has been subjected to the severest scrutiny, He stands without conviction as to a single error. Its ethics, its morals, its righteousness, its philosophy, its wisdom, its accuracy, have stood the test of the most rigid investigation. How can this be accounted for on the hypothesis that Jesus was only a man? The greatest of all other men, with the advantage of the world's best facilities, and under teachers of renown, have furnished the world with teaching full of mistakes and imperfections. If Jesus were only a man, how came it that He was so infinitely superior to all other men? And if thus superior in wisdom, righteousness and purity, how belie Himself in claiming to be infinitely more than a man? It were impossible. The two things are mutually destructive. Jesus furnishes the only explanation: "My teaching is not mine, but His that sent me." Jesus is _the_ teacher of the science of salvation. Others before Him taught the things pertaining to salvation, but their teaching was all by the Spirit of God, framed with reference to what His was to be. Others, after Him, taught the way of life, but they taught it as they received it from Him. When He ascended to the Father He sent the Holy Spirit as His advocate. The Spirit imparted to the apostles what He received from Christ. He took the words of the coronated Christ and gave them to the apostles, and they spake as the Spirit gave them utterance (see John xvi. 7, 15). It follows, therefore, that the teaching of the apostles is as infallible as that of the Christ, for it is simply His. It was not the purpose of Jesus to teach the wisdom of this world. He was not of this world, and His teaching was not with reference to this world. He came from another world, and the things pertaining to another world were the ultimatum of His teaching. The way of salvation is purely a matter of revelation. Man knows nothing about it except what God has revealed through Christ. The same is true as to that from which we are saved, and that to which we are saved. We know nothing of God, heaven, hell and eternity, except that which is revealed. All that we know of sin and its remedy we learn from the great Teacher. The nature and the consequences of sin we learn from the same source. The revelation of God is at once the source and limit of our knowledge of sin and righteousness, and their consequences. In the whole scheme of redemption Christ is the central figure; and on it He is the great teacher and supreme authority.