Mark 16:5

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

And entering into the sepulchre, they saw a young man. In Matthew 28:2, he is called "the angel of the Lord;" but here he is described as he appeared to the eye, in the bloom of a life that knows no decay. In Matthew he is represented as sitting on the stone outside the sepulchre; but since even there he says, "Come, see the place where the Lord lay" (Matthew 28:6), he seems, as Alford says, to have gone in with them from without; only awaiting their arrival to accompany them into the hallowed spot, and instruct them about it.

Sitting on the right side - having respect to the position in which His Lord had lain there. This trait is unique to Mark; but compare Luke 1:11.

Clothed in a long white garment. On its length, see Isaiah 6:1; and on its whiteness, see the note at Matthew 28:3.

And they were affrighted, [ exethambeetheesan (G1568)].