Mark 16:5

So they entered the grave. Mary Magdalene sees the stone rolled back, thinks the Jewish leaders have taken the body, and runs to find Peter and John (John 20:1-2). The other women enter the grave. Saw a young man. Matthew identifies him as an angel of the Lord. Luke says there were two of them, and there may have been more. They may have both sat and stood as they spoke with the women; and have been both inside and outside the grave at different points of time. [Angels: see Hebrews 1:14.]