Only Mark recorded this strange event. He described the young man (Gr. neaniskos, between24,40 years old) as one who was following Jesus. This description could mean he was one of the Twelve or simply someone who was sympathetic with Jesus. He was wearing a rather costly linen outer garment (Gr. sindon) without an undergarment (Gr. chiton). It may have been his sleeping garment. Perhaps he had been in bed in Jerusalem when he heard the mob leaving the city talking about arresting Jesus and decided to go along. When one of the soldiers seized him, he was so intent on abandoning Jesus that he was willing to run through the crowd naked rather than staying with Jesus. This man"s action further illustrates how eager Jesus" followers were to save their own skins at the cost of Jesus" safety and companionship. His naked condition highlights his fear and embarrassment (cf. Amos 2:16). [source][source][source]
This incident makes little contribution to the story of Jesus" arrest, apart from illustrating that everyone fled. Therefore some of the church fathers and most of the modern commentators have concluded that the young man was Mark , the writer of this Gospel. However there is no solid evidence for this. [1][source]