John Calvin's Commentary on the Bible - John 21:15
Verse 15 15.When, therefore, they had dined. The Evangelist now relates in what manner Peter was restored to that rank of honor from which he had fallen. That treacherous denial, which has been formerly described, had, undoubtedly, rendered him unworthy of the apostleship; for how could he be capable of instructing others in the faith, who had basely revolted from it? He had been made an Apostle, but it was along with Judas, and from the time when he had abandoned his post, (230) he had... read more
Adam Clarke's Commentary on the Bible - John 21:19
Should glorify God - Ancient writers state that, about thirty-four years after this, Peter was crucified; and that he deemed it so glorious a thing to die for Christ that he begged to be crucified with his head downwards, not considering himself worthy to die in the same posture in which his Lord did. So Eusebius, Prudentius, Chrysostom, and Augustin. See Calmet. Follow me - Whether our Lord meant by these words that Peter was to walk with him a little way for a private interview, or... read more