Before the Christian era, Aramaic had become the language of the Jews in Palestine. Jesus preached in Aramaic, and parts of the Old Testament and much of the rabbinical literature were written in that language. Christian Aramaic, usually called Syriac, also developed an extensive literature, especially from the 4th to 7th centuries.
The influence and diffusion of Aramaic began to decline in favor of Arabic at the time of the Arab conquest in the 7th century AD. Aramaic survives today in Eastern and Western dialects, mostly as the language of Christians living in a few scattered communities in Syria, Lebanon, Turkey, Iraq, and Iran.