21:20-23 What do we learn from Jesus' rebuke to Peter here?

This teaches that Christians should only be concerned with God's plan for their life, not another's. Having learned what God's plan was for him, Peter now wanted to know what His plan was for John.

Jesus rebuked him for concerning himself with it. Jesus' command to Peter in V22 "…you follow me," signified that Peter's primary concern must not be John, but Jesus. Jesus demands our single-minded attention to the terms He has laid down for discipleship.

He expects us to live our lives in faithfulness to His word, not compare it with what others do. (CP Php 2:12; 1Pe 1:10-12; 3:15).

See also comments on Php 2:12-13 and author's studies The Cost of Discipleship:

Forsaking all for Jesus in his book Advanced Studies in the Christian Faith (Volume 1), and Christian - Beware of Failing God's Grace and Forfeiting your Salvation in his book Advanced Studies in the Christian Faith (Volume 2).

These are but a few of over a 1000 questions answered from scripture in the QUESTION AND ANSWER STUDY OF THE NEW TESTAMENT.

These Studies by Br Val Boyle may be downloaded and freely distributed but not sold for profit.

John:-