The stone that had blocked the entrance to the tomb had been moved away
The tomb was found empty--no body, only the burial cloths
The tomb was found empty on the morning of the day after the Sabbath
There was someone there to announce that Jesus was not there among the dead
First--seeing the burial cloths there (and no body)
Second--the cloths were not just abandoned. The head cloth was folded and apart from the other strips!
They hadn't understood from the scriptures that Jesus must rise from the dead...but SEEING WAS BELIEVING!!!