His advisers were important because they came from different backgrounds and supported different ideologies. The consequences were that he could hear various opinions and choose what he thought was best, which resulted in the New Deal which was a program that helped the country provide relief and recovery for victims of the Depression and help economy establish itself once again.
Muslims believe that Islam is the complete and universal version of a primordial faith that was revealed many times before through prophets including Adam, Abraham, Moses and Jesus. Muslims consider the Quran to be the unaltered and final revelation of God.