Were present in Jerusalem at Pentecost (Acts 2:9). Parthia lay on the east of Media and south of Hyrcania, which separated it from the Caspian Sea. It corresponded with the western half of the modern Khorasan, and now forms a part of Persia.
This name occurs only in (Acts 2:9) where it designates Jews settled in Parthia. Parthia proper was ...
William Smith's Bible Dictionary