On the next day, he was determined to go out into Galilee, and he found Philip. Jesus said to him, "Follow me."

 We may illustrate this kind of relationship from another, but a kindred, sphere. The name of a certain younger man was mentioned to a famous teacher, whose student the younger man claimed to be. The older man answered: "He may have attended my lectures, but he was not one of my students." There is a world of difference between sitting in a teacher's class room and being one of his students. There can be contact without communion; there can be relationship without fellowship. All men are the sons of God in the sense that they owe to him the creation and the preservation of their lives; but only some men become the sons of God in the depth and intimacy of the true father and son relationship. 