Re: ISIS' underlying theology...
Another part of mainstream Islamic theology is that the Prophet Muhammad are the "final" chosen group of God to carry out His message to the world. God started with Moses and Jews, and they got it wrong, and then moved onto Jesus and the Christians, but the Christians got it wrong. So, God has now chosen the Muslims as the final group. Jesus is also seen in the Koran as the judge of those going to the Islamic heaven and hell (meaning in general, not just divine intervention in Jerusalem). Thus, because of their previous statuses, the Koran also says that Jews and Christians are to be treated as "people of the book", meaning that they shouldn't be mistreated due to their relationship with God. Moses and Jesus are something like prophets, like the Prophet Muhammad, but their people "got it wrong" and it's up to the Muslims to fix everything.
Another part of mainstream Islamic theology is that the Prophet Muhammad are the "final" chosen group of God to carry out His message to the world. God started with Moses and Jews, and they got it wrong, and then moved onto Jesus and the Christians, but the Christians got it wrong. So, God has now chosen the Muslims as the final group. Jesus is also seen in the Koran as the judge of those going to the Islamic heaven and hell (meaning in general, not just divine intervention in Jerusalem). Thus, because of their previous statuses, the Koran also says that Jews and Christians are to be treated as "people of the book", meaning that they shouldn't be mistreated due to their relationship with God. Moses and Jesus are something like prophets, like the Prophet Muhammad, but their people "got it wrong" and it's up to the Muslims to fix everything.