Charles Spurgeon Commentary Mark 16:5

"And entering into the tomb, they saw a young man sitting on the right side, arrayed in a white robe; and they were amazed." — Mark 16:5 (ASV)

And entering into the sepulcher, they saw a young man sitting on the right side, clothed in a long white garment; and they were affrighted.

An angel had assumed the appearance of a young man sitting inside the sepulcher.

And entering into the sepulcher, they saw a young man sitting on the right side, clothed in a long white garment; and they were affrighted.

An angel had been allowed to assume the appearance of a man; that usually seems to be the way in which angels appear to men.

I suppose there is, after all, a great kinship between angels and men; otherwise, angelic beings would not so constantly assume that form when they appear to men.

At the sight of the young man clothed in a long white garment, these good women were affrighted.