I have seen, and have testified that this is the Son of God."

 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. 