Many Medinans converted to the faith of the Meccan immigrants both before and after Muhammad's emigration, but only a few came from Jewish backgrounds because most of the Jewish community rejected Muhammad's status as a prophet. Their opposition "may well have been for political as well as religious reasons". According to Watt, "Jews would normally be unwilling to admit that a non-Jew could be a prophet." Mark Cohen adds that Muhammad was appearing "centuries after the cessation of biblical prophecy" and "couched his message in a verbiage foreign to Judaism both in its format and rhetoric."