Belief in God provides humanity with a transcendent reference for meaning, purpose, truth and reality. Such faith inspires us to persevere through trials with the assurance of divine accompaniment. Falling faith in God leads us to become self-referential and self-defining in our quest to feed these hungers of the human soul. In the absence of faith in God, one can become hedonistic, materialistic and utilitarian. When this occurs on a societal level it can lead to totalitarianism as witnessed by some of the most violent regimes of the 20th century.
Falling belief in the devil leads one to dismiss the influence of evil and causes the person to become susceptible to deception and temptation. It can also lead to an outright dismissal of moral truths. Still others may fall into a type of despair when their efforts for self-redemption fail and they continue to experience the unexplainable reality of evil.