Jamieson, Fausset and Brown on Mark 5:2

2. And when he was come out of the ship, immediately--(see Mr 5:6).

there met him a man with an unclean spirit--"which had devils [demons] long time" (Lu 8:27). In Matthew (Mt 8:28), "there met him two men possessed with devils." Though there be no discrepancy between these two statements--more than between two witnesses, one of whom testifies to something done by one person, while the other affirms that there were two--it is difficult to see how the principal details here given could apply to more than one case.