It seems that religion exists as a belief system to help people explain events that would otherwise be unexplainable. In fact Kenneth Dick said in "Man, Father of the Gods" "All religions start as a mere imaginary explanation for something not understood, and that is all they are." Many, if not all religions do this. Christianity, Vikings, Greek, including every culture today. The Christians had for example the story of the "Tower of Babel" In Genesis to explain the division of languages. The Jews, Christians, and the Muslims as well as many others believe that God created the world. The only difference is that the Muslims believe it only took 6 days instead of the conventional (Or what has become conventional to us) seven days . The Vikings and the Greeks seem to have Gods for everything, The God of Thunder, God of Lightning, God of War, and Goddess of Love, All to explain what they could not. Also many Americans believe that the World Trade Center attacks happened because God was angry. All these examples point to the fact that the search for knowledge is important to religion as a whole.
While understanding the intellectual component of Religion as an attempt to explain the unexplainable is helpful, obviously there is more to Religion than just explanations. The sociological