Spirits sometimes (by God's permission or direction) assumed human shapes. They seeing a human shape, and not able on the sudden to conceive how a human body should come into the midst among them, without any more noise or notice taken of it, were affrighted, as we usually are at the sight of apprehended apparitions. From hence we may conclude, that either the world, and the best men in it, have been in all ages deceived, and a few atheists have been wiser than them all, or there are such beings as spirits.
Related Commentaries of Luke 24:37
Luke 24:37
37 But they were terrified and affrighted, and supposed that they had seen a spirit.