How is the theme of questioning God developed in this memoir?

A huge theme throughout the piece is the evolving relationship that Wiesel has with God. The reader learns early on in the book that Eliezer is very devout and eager to learn more about his faith, but as time continues, so the stability of his faith is challenged. Interestingly, it is not that Wiesel ever stops believing in God in entirely, but more that he has a deep resentment of a god who has allowed for such evil to persist. Wiesel frequently identifies the reason for people’s death as their loss of a will to live; while Wiesel does indeed lose faith, he never does so completely, and the reader is led to believe that it is perhaps his emotion, even if negative, towards God, that is partly responsible for keeping him alive.