Why were the broad invitations of the heart of Jesus so narrowed in their practical application? The answer is very simple. Jesus was the revealing of God--God manifest in the flesh. He had come into this world not merely to heal a few sick people, to bring back joy to a few darkened homes by the restoring of their dead, to formulate a system of moral and ethical teachings, to start a wave of kindliness and a ministry of mercy and love; he had come to save a lost world, to lift men up out of sinfulness into holiness. There was only one way to do this,--men must be brought back into loyalty to God. Jesus astonishes us by the tremendous claims and demands he makes. He says that men must come unto him if they would find rest; that they must believe on him if they would have everlasting life; that they must love him more than any human friend; that they must obey him with absolute, unquestioning obedience; that they must follow him as the supreme and only guide of their life, committing all their present and eternal interests into his hands. In a word, he puts himself deliberately into the place of God, demanding for himself all that God demands, and then promising to those who accept him all the blessings that God promises to his children. This was the way Jesus sought to save men. As the human revealing of God, coming down close to humanity, and thus bringing God within their reach, he said, "Believe on me, love me, trust me, and follow me, and I will lift you up to eternal blessedness." While the invitation was universal, the blessings it offered could be given only to those who would truly receive Christ as the Son of God. If Jesus seemed to demand hard things of those who would follow him, it was because in no other way could men be saved. No slight and easy bond would bind them to him, and only by their attachment to him could they be led into the kingdom of God. If he sometimes seemed to discourage discipleship, it was that no one might be deceived as to the meaning of the new life to which Jesus was inviting men. He would have no followers who did not first count the cost, and know whether they were ready to go with him. Men could be lifted up into a heavenly life only by a friendship with Jesus which would prove stronger than all other ties. Religion, therefore, is a passion for Christ. "I have only one passion," said Zinzendorf, "and that is he." Love for Christ is the power that during these nineteen centuries has been transforming the world. Law could never have done it, though enforced by the most awful majesty. The most perfect moral code, though proclaimed with supreme authority, would never have changed darkness to light, cruelty to humaneness, rudeness to gentleness. What is it that gives the gospel its resistless power? It is the Person at the heart of it. Men are not called to a religion, to a creed, to a code of ethics, to an ecclesiastical system,--they are called to love and follow a Person.