Indistinguishability of the Christian God's Existence from Non-Existence — 17

Some Christians treat answered prayer, protection, healing, religion-health correlations, and vivid spiritual experiences as public evidence that a specifically Christian agent intervenes in the world. That evidential use generates a testable expectation: a sufficiently regular and outcome-directed intervention should produce at least one independently specified, repeatable difference from the same domains without that additional intervention. This paper compares that strong public-intervention model with a background-only comparator across three evidence streams. Large controlled studies and meta-analytic reviews have not established a reliable therapeutic effect of distant intercessory prayer. Observational studies do report lower mortality among frequent service attenders in some cohorts, but the associations are compatible with social, behavioral, and psychological pathways and do not identify supernatural causation. Cross-cultural work finds vivid spiritual-presence experiences in multiple traditions and relates their distribution to cultural models and individual absorption, limiting their power to identify a uniquely Christian source. The cumulative result is directional but bounded: the assessed public record does not confirm the model over its comparator and lowers support for strong versions that predict robust, accessible effects. It does not show that no Christian deity exists, that no prayer is ever answered, or that a believer cannot possess private warrant. It instead demands a revision condition: what observable outcome would count against the intervention claim?