Gods came to set the captive free.God is always in control he calls the
shots not Satan he is in control his motives and purposes we can not understand but we do know his character is always for good and he always has a plan.It is spiritual
lesson from a real life situation.I am jumping way ahead here but at the time the people sent Jesus away the demoniac man was sent back to his
family when you read later because of his testimony the next time they visit years later to those towns many people are saved because of him so again yes some pigs died one man was set free but that man went and told his story and many were saved and added to the kingdom so to God be the glory.brentnz