but when they saw him walking on the lake, they supposed that it was a ghost, and cried out, Bible

“a ghost.” The Greek word is phantasma (#5326 φάντασμα) and it means “something that appears,” from phaino, to appear. Thus an apparition or a ghost of some kind. The only other appearance of the word is in Matthew 14:26, where it is used in a sentence and translated “ghost.” It was a long-held belief that the sea was the home of spirits of various kinds, and that the disciples saw what they thought was an apparition, a disembodied spirit coming towards them on the water filled them with terror and they cried out in fear.

Commentary for: Mark 6:49