Since the modern age the attacks against faith and religious belief have been raised. One of the major arguments against the existence of God who is described in theistic religious holy books as Almighty and all loving God come in terms of suffering in human life and the presence of evil in the world created by God. The challenge according to the critics against the religious life and faith is how a believer can be considered rational in his faith while there are many suffering in human life and evil in the world. The aim of this paper is to deal with this challenge and the solution is given on the basis of Islamic teachings. There are different responses for this challenge both in Islamic theology and Christian theology. This research is limited to Quranic teachings and the main claim as one possible response and defense for the presence of evil in human life is to point out that evil plays a main role in provoking inborn knowledge of God in human nature.