Parthia was home to a large population of the Diaspora, including Samaritans. The customs, history and prophecies of the Samaritans were shared with the religious leaders in Parthia. The main religion of Parthia was Zoroastrianism and Zoroastrian priests were most likely the "Wise Men" of the nativity story. These "wise men" were aware of the prophesied suffering Messiah, as shown by the tau-rho monograms on their coins.