Is to command them to recognize him as a prophet sent by God who is prophesied in their scriptures and to submit to his authority. He knows the Jews cannot do this and practice the rituals of Islam because it is against the OT. They would have to break the laws of Moses and practice rituals not commanded anywhere by Moses. They would also have to submit to someone who is ineligible to be a prophet, because he is an Arab, and someone who is not mentioned anywhere in the OT. Mohammed knows this beforehand and calculates their refusal to submit to him. This is actually the desired response. In preparation for this Mohammed described the prophets of the bible as warners who initiated the destruction of those who refused to submit to their message. The Jews of Medina are thus manoeuvred by Mohammed in to the category of those who are destined to be punished and destroyed by the warner, in this case Mohammed. It is a very clear and obvious strategy used by Mohammed to make his followers think that to attack the Jews is the clear, logical, unavoidable and just outcome of the disobedience and stubborn refusal of the Jews to submit to Mohammed and recognize him for what he is, namely the prophet who was foretold by Moses. Mohammed’s strategy is to whip up hatred for the Jews to convince his followers that it is right to treat them badly and take away all their worldly goods and blessings because they offended Allah and his prophet. The strategy worked perfectly.