Peter, when after so many miracles and such high doctrine he confessed that, "Thou art the Son of God" (Matt. xvi. 16), is called "blessed," as having received the revelation from the Father;
-St. John Chrysostom, Homily 21 on John 1, 1. B#58, pp. 72, 73, 4th Century


... while Nathanael, though he said the very same thing before seeing or hearing either miracles or doctrine, had no such word addressed to him, but as though he had not said so much as he ought to have said, is brought to things greater still.
-St. John Chrysostom, Homily 21 on John 1, 1. B#58, pp. 72, 73, 4th Century


What can be the reason of this? It is, that Peter and Nathanael both spoke the same words, but not both with the same intention. Peter confessed Him to be "The Son of God' but as being Very God; Nathanael, as being mere man.
-St. John Chrysostom, Homily 21 on John 1, 1. B#58, pp. 72, 73, 4th Century


And whence does this appear? From what he said after these words; for after, "Thou art the Son of God," he adds, "Thou art the King of Israel." But the Son of God is not "King of Israel" only, but of all the world.
-St. John Chrysostom, Homily 21 on John 1, 1. B#58, pp. 72, 73, 4th Century


Seest thou how He leads him up by little and little from the earth, and causes him no longer to imagine Him a man merely? for One to whom Angels minister, and on whom Angels ascend and descend, how could He be man?
-St. John Chrysostom, Homily 21 on John 1, 1. B#58, pp. 72, 73, 4th Century