The nature of Satan’s task and whether that fulfilled God’s intention is yet to be examined. Even, Quran does not say that jannah is over the moon or anywhere outside this earth. All we know that Adam would be the Khalifa of God on earth and the rest of the most narratives has come from Old Testament and Persian hadith literature. I have not yet gone through the matter in deep. I am now studying the fundamental areas that matters to our salvation and that matters to our real understanding of the true messages in the Quran. God willing, in future, we will take these issues after reading the whole Quran forensically.