John Chrysostom
Catena Aurea · Matthäusevangelium 17
And when they were come to Capernaum, they that received tribute money came to Peter, and said, Doth not your master pay tribute? He saith, Yes. And when he was come into the house, Jesus prevented him, saying, What thinkest thou, Simon? of whom do the kings of the earth take custom or tribute? of their own children, or of strangers? Peter saith unto him, Of strangers. Jesus saith unto him, Then are the children free. Notwithstanding, lest we should offend them, go thou to the sea, and cast an hook, and take up the fish that first cometh up; and when thou hast opened his mouth, thou shalt find a piece of money: that take, and give unto them for me and thee.
But this instance were brought to no purpose if He were not a son. But some one may say, He is son indeed, but not an own son. But then He were a stranger; and so this instance would not apply; for He speaks only of own sons, distinct from whom He calls them strangers who are actually born of parents. Mark how here also Christ certifies that relationship which was revealed to Peter from God, Thou art Christ, the Son of the living God.