What does Matthew 8:31 mean?
Jesus has been confronted by two demon-possessed men. The demons know Jesus is the Son of God and that He will order them out of the men. They know, also, that they will have no choice but to obey whatever command He gives to them (Matthew 8:28–30). The "herd" of pigs nearby is not a small cluster, but several thousand animals (Mark 5:13).Now the demons appear to accept their impending fate. Luke tells us that they didn't want to be sent into the abyss (Luke 8:31), while Mark says they did not want to be sent out of the country (Mark 5:10). The abyss was understood to be a place where demons were kept until the time of God's judgment (Revelation 9:1–2). Rather than face those options, the demons beg to be sent into the pigs, instead. Scripture does not specify how this would be ultimately any different, given how the animals respond (Matthew 8:32). Still this is their plea.