"Feed my lambs" (John 21:15) answers to the first benediction in John 20:19: it is Gospel-exposition needed by the young believer to establish him in the foundation truth of redemption. "Shepherd" or "discipline" My sheep (John 21:16) answers to the second "Peace be unto you in John 20:21, which relates to service and walk. "Feed my sheep" (John 21:17) answers to the third "Peace be unto you" in John 20:26, spoken for the special benefit of Thomas, and has to do with the work of restoring those who have gone astray.