In Gethsemane Jesus did not swing a sword but accomplished more than any other person in history as a result. Perhaps that was the point of telling the disciples to carry swords then telling them to cease using them. Jesus was acting agent for God so what Jesus achieved was achieved on behalf of the Father, God. After telling the disciples to carry swords, Jesus then told the police to let the disciples go since Jesus was the one they sought. This ensured there were disciples alive to witness the crucifixion and carry that news around the World. These later witnessed the resurrection of Jesus too, proving Jesus is the Christ chosen by God to save us.
