What does Matthew 26:71 mean?
Jesus said Peter would deny Him three times before morning came on this endless-seeming night (Matthew 26:30–35). Peter said he would die before doing that. That was before he knew he would be sitting in the courtyard of the high priest immediately following Jesus' death sentence inside (Matthew 26:69).One servant girl has said that she knows Peter as one who was with Jesus. Peter is only here because John, who knows the family of the high priest, was able to gain access (John 18:15–18). The girl might have seen the disciples with Jesus. Peter denies his association with Christ, to everyone who heard this, and starts to move away. He got as far as the entrance to the courtyard when another servant girl saw him. This one made her accusation to those standing around Peter: this is one of the followers of Jesus of Nazareth.
Peter knows he's in a vulnerable position. The guards who brought Jesus bound to this household could easily grab him and haul him inside, as well.