Peter’s Charge to Follow
John 21: 17-22

Joh 21:17 He saith unto him the third time, Simon, son of Jonas, lovest thou me? Peter was grieved because he said unto him the third time, Lovest thou me? And he said unto him, Lord, thou knowest all things; thou knowest that I love thee. Jesus saith unto him, Feed my sheep.
Joh 21:18 Verily, verily, I say unto thee, When thou wast young, thou girdedst thyself, and walkedst whither thou wouldest: but when thou shalt be old, thou shalt stretch forth thy hands, and another shall gird thee, and carry thee whither thou wouldest not.
Joh 21:19 This spake he, signifying by what death he should glorify God. And when he had spoken this, he saith unto him, Follow me.
Jesus and the Beloved Apostle
Joh 21:20 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?
Joh 21:21 Peter seeing him saith to Jesus, Lord, and what shall this man do?
Joh 21:22 Jesus saith unto him, If I will that he tarry till I come, what is that to thee? follow thou me.

Union Gospel Press
Believers Bible Commentary
esword.com
Matthew Henry Concise Commentary
https://www.biblestudytools.com/commentaries/matthew-henry-complete/
http://www.bible-studys.org/index