Christianity in Iran

Christianity in Iran dates back to the early years of the religion during the time of Jesus, predating Islam. The Christian faith has always comprised a minority in Iran under its previous state religions; initially Zoroastrianism in historical Persia, followed by Sunni Islam in the Middle Ages after the Arab conquest, and Shia Islam since the Safavid conversion of the 15th century; although it had a much larger representation in the past than it does today. Iranian Christians have played a significant part in the historical Christian mission: currently, there are at least 600 churches and 100,000–150,000 Christians in Iran.