Acts 2:9

Verse 9. Parthians, etc. To show the surprising extent and power of this miracle, Luke enumerates the different nations that were represented then at Jerusalem. In this way the number of languages which the apostles spoke, and the extent of the miracle, can be ascertained. The enumeration of these nations begins at the east, and proceeds to the west. Parthians mean those Jews, or proselytes, who dwelt in Parthi. This country was a part of Persia, and was situated between the Persian Gulf and the Tigris on the west, and the river Indus on the east. To the south it was bounded by the desert of Caramania, and it had Media on the north.