Miracles vs Repeated Experiments
Materialists believe only what can be experimentally proven by repeated examples. This belief system creates an insurmountable skepticism toward miracles and religious experiences. This is the case since all miracles which God repeats (such as the creation of a new life) are classified as "natural events" that don't require God, while all miracles which God performs only once are dismissed and denied as impossible because they cannot be repeated on command under experimental conditions.
Consider this quandary. The resurrection of Christ was witnessed and testified to by credible witnesses who gave their lives in affirming that their testimony was true. Using the standards of a court of law, logic and history would compel us to conclude that their testimony is true. To the modern skeptic, however this testimony is automatically dismissed because it cannot be verified by repeated experiments.