Why do people need to embrace Islam if God says all the descendants of Abraham and the followers of the Jews, Christians, and Sabeans, are included in heaven? Because Muhammad is supposed to be the seal of the prophets and the final messenger. So, ideally, one should read everything God has to say. And in the end...God is going to calm everyone down and settle all disputes. He will then explain why he has so many different religions worshiping him.
