Why does the young man refer to the Lord as "Jesus of Nazareth"?
Mark 16:6 (ESV)
6And he said to them, “Do not be alarmed. You seek Jesus of Nazareth, who was crucified.He has risen; he is not here. See the place where they laid him.
Jesus was known as Jesus of Nazareth (Mark 1:9) in order to distinguish him from all the other Jewish men who also had the name Jesus at the time.
6 And he said to them, “Do not be alarmed. You seek Jesus of Nazareth, who was crucified. He has risen; he is not here. See the place where they laid him.