What is Truth?
What is Truth?
Podcast Description
"What is Truth?" is a Catholic podcast delving into some of the most profound and challenging aspects of the faith. Join host Jonathon Fessenden as he explores the rich history of Catholicism through in-depth discussions and compelling interviews. Each episode shines a light on the extraordinary miracles that have shaped the Church’s legacy, from Marian apparitions and stigmata to powerful accounts of exorcisms and spiritual warfare. Designed for listeners who seek a deeper understanding of the mysteries and miracles within Catholicism, What is Truth? challenges perceptions and inspires faith, inviting believers and seekers alike to discover the profound truths that lie within the Catholic tradition.
Podcast Insights
Content Themes
The podcast covers themes related to the history, miracles, and challenges of faith within Catholicism, with episodes exploring topics like Marian devotion, generational sin, the nature of exorcisms, and dark subjects such as suicide. For instance, Episode 6 discusses Dan Schneider's Liber Christo Method, while Episode 4 features Edward Byrne's insights on overcoming the trauma of suicide.

“What is Truth?” is a Catholic podcast delving into some of the most profound and challenging aspects of the faith. Join host Jonathon Fessenden as he explores the rich history of Catholicism through in-depth discussions and compelling interviews. Each episode shines a light on the extraordinary miracles that have shaped the Church’s legacy, from Marian apparitions and stigmata to powerful accounts of exorcisms and spiritual warfare. Designed for listeners who seek a deeper understanding of the mysteries and miracles within Catholicism, What is Truth? challenges perceptions and inspires faith, inviting believers and seekers alike to discover the profound truths that lie within the Catholic tradition.
In this episode of What is Truth?, Jonathon Fessenden interviews The Metaphysics of Martyrdom (January 29, 2026)
In this interview, we explore The Metaphysics of Martyrdom by J. Marianne Siegmund, a profound philosophical and theological reflection on martyrdom as more than heroic death—it is an act of metaphysical witness. Drawing from Sacred Scripture, St. Thomas Aquinas, and St. John Paul II, Siegmund presents martyrdom as a convergence of free will, grace, truth, and love, where the human person bears witness to reality itself.
Rather than viewing martyrdom merely as suffering or political resistance, this conversation uncovers its deeper meaning: a participation in being, where fidelity to truth, goodness, and beauty is sealed through self-gift. We examine how martyrdom reveals the dignity of the human person, the nature of moral freedom, and the ultimate victory of divine love over violence and death.
This discussion is for anyone interested in Catholic philosophy, metaphysics, moral theology, and the mystery of sanctity, especially in a world increasingly hostile to truth.
The Metaphysics of Martyrdom by J. Marianne Siegmund | En Route Books and Media

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