In this lecture David Shenk gives a brief historical sketch about Muhammad's life, his receiving the revelation from Gabriel, migrating to Medina and establishing the Muslim community with the mechanisms of military and political power. Just because this Muslim community traces its origin to Abraham, the teacher reads from the Bible the story about God calling Abraham to leave the land of polytheism. You will also learn about three Abrahamic movements, including Islam. Islam is the instruction on what you should do and believe and Qur'an is the final clarification of that instruction. And the Muslim Ummah is the community that is committed to embracing the Qur'an.