Matthew 8:33

Verse 33. They that kept them fled, etc. These swine were doubtless owned by the inhabitants of Gadara. Whether they were Jews or Gentiles is not certainly known. It was not properly in the territory of Judea; but as it was on its borders, it is probable that the inhabitants were a mixture of Jews and Gentiles. Swine were to Jews unclean animals, and it was unlawful for them to eat them, Le 11:7. The Jews were forbidden by their own laws to keep them, even for the purpose of traffic. Either, therefore, they had expressly violated the law, or these swine were owned by the Gentiles. The keepers fled in consternation. They were amazed at his power.