Why did Peter go back to fishing? Study John 21 with context, apologetic analysis, and cross-references.
Dr. Lucas D. Shallua Commentary · John 21
Peter went back to fishing because he did not know what else to do. He was waiting for Jesus. He had not yet received the Holy Spirit. He had not yet been commissioned. He returned to his old trade, but his old trade could not satisfy. The night of fishing was fruitless. The King would soon redirect his life.
Jesus asked Peter three times because Peter had denied Him three times. The threefold denial is undone by the threefold confession. The restoration is complete and symmetrical. Jesus is not trying to humiliate Peter. He is healing him. He is giving him the opportunity to affirm his love in the same measure that he had denied it.
The number 153 has been interpreted in many ways. Some see it as the number of nations known at the time, symbolizing the universality of the gospel. Others see it as a symbolic number representing the fullness of the harvest. The point is not the exact number but the abundance of the catch. The King provides more than enough.
The phrase “stretch out your hands” was a euphemism for crucifixion. Jesus is telling Peter that he will be martyred for his faith. Church tradition holds that Peter was crucified upside down in Rome under Nero. He did not consider himself worthy to die in the same manner as his Lord. The King calls His disciple to follow Him even to death.
Jesus rebuked Peter’s question because Peter was comparing his calling to John’s. Peter was not responsible for John’s future. He was responsible for his own. The King calls each disciple individually. Do not compare your calling to another’s. Follow Jesus. That is enough.
Jesus did not say that John would not die. He said, “If it is my will that he remain until I come, what is that to you?” The rumor spread that John would not die, but John corrects it. Church tradition holds that John lived to old age and died in Ephesus. He did not die a martyr’s death like Peter. The King’s will is sovereign over life and death.
John’s Gospel was written so that readers may believe that Jesus is the Christ, the Son of God, and that by believing they may have life in His name. The signs are selected. The testimony is true. The world could not contain the books that could be written. The King is greater than any book. Believe.
Chapter 20 ended with the resurrection, the appearances to Mary Magdalene and the disciples, and Thomas’s confession: “My Lord and my God!” John’s Gospel has reached its theological climax. The stated purpose of the book — “that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name” — has been declared. Now John adds an epilogue. The setting shifts from Jerusalem to the Sea of Tiberias in Galilee. This return to Galilee was foretold by Jesus before His death: “After I am raised up, I will go before you to Galilee.” The chapter is a study in restoration, commissioning, and discipleship. The King restores His failed disciple and sends him to shepherd the flock.
Some critics argue that John 21 is a later addition to the Gospel. But the chapter is deeply rooted in the historical context of the disciples’ return to Galilee. The detail of the Sea of Tiberias, the fishing, the charcoal fire, the 153 fish, and the restoration of Peter are vivid and specific. The most plausible explanation is that it preserves genuine historical memory. The restoration of Peter is also historically significant. The fact that the early church preserved the story of Peter’s denial and restoration is a mark of authenticity. If the Gospel writers were inventing stories, they would not have included the denial. The restoration is a powerful testimony to grace. The prediction of Peter’s martyrdom is also historically significant. Church tradition holds that Peter was martyred in Rome. The most plausible explanation is that Jesus actually predicted it, and it came to pass.
This study preserves the hard questions, explanations, context, apologetic note, and references from Dr. Shallua's Commentary.