Sebeos, a 7th-century Armenian bishop and historian, wrote shortly after the end of the first Arab civil war concerning Muhammad, what mostly conforms to the Muslim tradition," In that period a certain one of them, a man of the sons of Ishmael named Muhammad, a merchant, became prominent. A sermon about the Way of Truth, supposedly at God's command, was revealed to them, and [Muhammad] taught them to recognize the God of Abraham, especially since he was informed and knowledgeable about Mosaic history. Because the command had come from On High, he ordered them all to assemble together and to unite in faith. Abandoning the reverence of vain things, they turned toward the living God, who had appeared to their father, Abraham. Muhammad legislated that they were not to eat carrion, not to drink wine, not to speak falsehoods, and not to commit adultery. He said: "God promised that country to Abraham and to his son after him, for eternity. And what had been promised was fulfilled during that time when [God] loved Israel. Now, however, you are the sons of Abraham, and God shall fulfill the promise made to Abraham and his son on you. Only love the God of Abraham, and go and take the country which God gave to your father, Abraham. No one can successfully resist you in war, since God is with you."" Sebeos knows Muhammad's name and that he was a merchant by profession. He presents a good summary of Muhammad's preaching and the four prohibitions which are mentioned in the Qur'an.