For Augustine, the servile fear is a just retribution which the first human beings received for their disobedience, while the clean fear is a gift from God. Heidegger interprets the former as the world-oriented worldly fear, and the latter selfly fear which directs toward the self. The concept of servile fear and that of fear are separately used by them as signifying the unauthentic way of experiencing the world as home, while anxiety and clean fear are referred to as revealing the possibility of an authentic potentiality-of-being. They both argues that the servile fear or fear is unavoidable since we are always lost in the world. Even though they may have so much in common, Augustinian clean fear and authentic existence exclusively come from God, and Heidegger tends to tie the anxiety to the existence of the self of Dasein.