Donald Kelly is a former NFL fullback and the lead pastor of Doxa Church who addresses the intersection of physical optimization and Christian theology. Through his long-form series, The Ex Nihilo Podcast, he explores what he terms Bio-Theology, connecting biblical stewardship to modern wellness practices. His work often features collaborations with experts like Nancy Pearcey and former pro-athletes like Matt Forte to discuss the spiritual implications of physical health. In the recent series The Health Crisis in the Church, he challenges traditional religious circles to adopt more rigorous standards for physical discipline. Kelly integrates his background in elite athletics with pastoral authority to promote lifestyles free from environmental toxins and pharmaceuticals. By highlighting specific health hazards like EMF exposure and artificial food dyes, he provides a performance-based framework for spiritual resilience. His content serves as a resource for men seeking to reclaim biblical masculinity through ancestral living and disciplined physical stewardship.