What does John 18:26 mean?
When Jesus was arrested, Peter attempted to make good on his earlier boast (John 13:37). Despite Jesus negotiating to have the disciples left unharmed (John 18:8), Peter struck back. Using a small sword, he lashed out and somehow struck a servant, cutting off the man's ear (John 18:10–11). Now, having followed Jesus at some distance, Peter is in a different kind of danger. He has already been asked, twice, about his relationship to the man being interrogated inside (John 18:17, 25). Both times, he's lied in order to avoid being caught.John is the only one of the Gospel writers to mention the name of the servant Peter wounded in Gethsemane. That's likely because John—the unnamed disciple of this passage—had familiarity with the high priest's household (John 18:15–16). The man now speaking to Peter, it seems, wasn't merely present when violence occurred, it was one of his own relatives who was maimed. His memory of the event is both vivid and personal.
Unlike the previous two questions, which assumed the answer would be "no," this challenge about Peter's identity is more self-assured. The servant speaking is confident that the Galilean (Matthew 26:73) standing there is the same one who recently assaulted his relative and fellow servant. Peter is in deep trouble.