Augustine of Hippo
Catena Aurea · Johannesevangelium 21
And when he had spoken this, he saith unto him, Follow me. Then Peter, turning about, seeth the disciple whom Jesus loved following; which also leaned on his breast at supper, and said, Lord, which is he that betrayeth thee? Peter seeing him saith to Jesus, Lord, and what shall this man do? Jesus saith unto him, If I will that he tarry till I come, what is that to thee? follow thou me. Then went this saying abroad among the brethren, that that disciple should not die: yet Jesus said not unto him, He shall not die; but, If I will that he tarry till I come, what is that to thee?
(Tract. cxxiv) Our Lord having foretold to Peter by what death he should glorify God, bids him follow Him. And when He had spoken this, He saith unto him, Follow Me. Why does He say, Follow Me, to Peter, and not to the others who were present, who as disciples were following their Master? Or if we understand it of his martyrdom, was Peter the only one who died for the Christian truth? Was not James put to death by Herod? Some one will say that James was not crucified, and that this was fitly addressed to Peter, because he not only died, but suffered the death of the cross, as Christ did.