Matthew 8:33

And they that kept them fled, and went their ways into the city, and told every thing, and what was befallen to the possessed of the devils.

Cross-references

Mark 5:14-16 gives the parallel synoptic account of the herdsmen reporting the same event, adding details about the people's reaction.

Luke 8:34-36 parallels the same story, describing how the herdsmen told everything in the city and the people came to see.