He went his way (aphlqen). He went off and did as Jesus told him. He heralded (khrussein) or published the story till all over Decapolis men marvelled (eqaumazon) at what Jesus did, kept on marvelling (imperfect tense). The man had a greater opportunity for Christ right in his home land than anywhere else. They all knew this once wild demoniac who now was a new man in Christ Jesus. Thousands of like cases of conversion under Christ's power have happened in rescue missions in our cities.