G4847 συμπολίτης (sympolítēs)

KJV renderings: fellow- citizen
Strong's definition: a native of the same town, i.e. (figuratively) co-religionist (fellow-Christian)
Derivation: from G4862 (σύν) and G4177 (πολίτης);

From James Strong's public-domain dictionaries (G), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.