This point serves a significant purpose. It exposes the disciples in all of their humanity minus the super apostleship with which we usually imagine them. They were ordinary men with expectations concerning Jesus of Nazareth, only to have those expectations crushed with his crucifixion as engineered by the Jews and executed by the Romans. They feared for their lives and immediately went into hiding. In fact, when Jesus appeared to them, John tells us that that were behind closed doors “for fear of the Jews.”
Then the same day at evening, being the first day of the week, when the doors were shut where the disciples were assembled for fear of the Jews, came Jesus and stood in the midst, and saith unto them, Peace be unto you.