Karen Amstrong is one of the most prominent women writers who dedicated herfile for researching on religious and God. The open-minded and critical view embedded in her works derived from Karen Amstrong past experinced as a spiritual nun. Not being able to find God religious formalism she then always is searching for the true God . Almost becoming an atheist she finally realized that God has been misinterpreted. She made breakthroughs by advocating humanist or fighting in the name of God will have no reasonable ground. Karen Amstrong is indeed an insightfull existentialist.