Certainty4Eternity

Mark Gilbert
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  • Religion & Spirituality

C4E exists to help people share the good news about Jesus with people from a Roman Catholic background. Join us to hear insightful conversations for grown-ups and teens so that you can better understand Catholicism and have better conversations with your Catholic friends

  1. Oct 15

    Can You Be Saved Without Knowing Jesus? | Camden Bucey

    In this episode of Certainty4Eternity, Mark Gilbert and Camden Bucey explore the theology of Karl Rahner, the Catholic idea of the “anonymous Christian,” and the way Roman Catholicism understands unity between Catholics, Protestants and the wider world. Camden explains the Catholic inclusivist approach to salvation: the belief that salvation is ultimately through Jesus Christ, while a person may be saved without explicitly knowing or understanding that they are responding to Christ. He explains how this connects with Rahner's idea of the anonymous Christian. Mark and Camden then explore a bigger question: What does the Catholic Church mean by Christian unity? They discuss the idea of the Roman Catholic Church as a “sacrament of unity for the world,” and what this means for the way Catholicism understands its relationship with Protestants, Muslims, Jews and others. They also discuss Vatican II, Karl Rahner's influence, the relationship between the Catholic Church and salvation, and why Mark believes Biblical Christian unity is ultimately unity in truth and the Spirit, rather than simply institutional unity. Timestamps 00:00 — Introduction: Christian unity and Karl Rahner 03:05 — Mark's experience growing up Catholic 17:11 — How does Catholicism understand Christian unity? 24:45 — The Catholic Church and the incarnation 25:38 — Vatican II and the changing Catholic approach to unity 28:36 — Who was Karl Rahner? 34:15 — God's self-communication and humanity 36:31 — The world as “sacrament” 39:45 — Exclusivism, pluralism and Catholic inclusivism 41:13 — Can you be saved without knowing Jesus? 41:46 — Karl Rahner's “anonymous Christian” 42:22 — Is this an overly optimistic view of humanity? 58:01 — The Catholic Church as a “sacrament of unity” 58:18 — “We're all brothers” — how Catholicism understands unity 1:01:42 — Institutional unity vs unity in truth and the Spirit 1:02:47 — Talking with Catholics About Jesus 1:06:34 — The course and how it can be used 1:08:17 — The free Unity episode Resources mentioned Reformed Forum https://www.youtube.com/@ReformedforumOrg Talking with Catholics About Jesus https://matthiasmedia.com.au/products/talking-with-catholics-about-jesus The Road Once Travelled https://matthiasmedia.com.au/products/road-once-travelled The God Who Saves https://matthiasmedia.com.au/products/the-god-who-saves Stepping Out in Faith https://matthiasmedia.com.au/products/stepping-out-in-faith Reformed Forum https://www.youtube.com/@ReformedforumOrg If you want to understand Catholicism from a Bible-centred evangelical perspective, subscribe to Certainty4Eternity for more conversations about Catholic theology, Christian unity, salvation, the gospel and how to talk with Catholics about Jesus. 💬 Got a question? Leave it in the comments or DM us on socials. We might feature it in an upcoming episode! 📲 Stay Connected 📸 Instagram - https://www.instagram.com/certainty4eternity 📘 Facebook - https://www.facebook.com/people/Certainty4Eternity/61577169852716/ 👍🏼 Like this video 🔔 Follow for weekly episodes 💬 Comment with your questions 📣 Share with friends curious about Catholicism & Christianity

  2. Oct 15

    I Grew Up Catholic. Here’s Why I Became Protestant | Sam Jensen

    What happens when someone grows up Catholic, discovers Jesus through Scripture, and eventually becomes Protestant? In this episode of Certainty4Eternity, Sam Jensen shares her story of growing up in an Italian Catholic family, attending Catholic Mass with her grandparents, and first becoming fascinated by Jesus through school Scripture classes. Sam explains the questions she wrestled with around confession, forgiveness, assurance and the Catholic Church, and how coming to understand salvation through Christ changed her understanding of the gospel. She also shares what it was like navigating her family's Catholic identity, having difficult conversations with people she loves, and discovering that others in her own family had made a similar journey. If you've grown up Catholic, are considering leaving the Catholic Church, or simply want to understand why some Catholics become Protestant, this conversation offers a personal and thoughtful perspective. Timestamps 00:00 Growing Up Catholic 02:03 Discovering Who Jesus Is 05:37 Why Do I Keep Asking for Forgiveness? 08:23 When Your Faith Is Your Family’s Identity 13:14 What Sam Appreciated About Catholicism 14:31 Guilt, Assurance and “Am I Good Enough?” 21:05 Discovering a Family History of Faith 27:42 Leaving Catholicism Without Losing Your Family Watch, listen and subscribe for more conversations about Catholicism, Christianity, the gospel and following Jesus. Resources mentioned: 📖 The Road Once Traveled - https://matthiasmedia.com.au/products/road-once-travelled?srsltid=AU7gw4Umm-rj87tPCLx5NjSHv3CNllZeJC_UavyFdlcIraeLDa4W6sB3 💬 Got a question? Leave it in the comments or DM us on socials. We might feature it in an upcoming episode! 📲 Stay Connected 📸 Instagram - https://www.instagram.com/certainty4eternity 📘 Facebook - https://www.facebook.com/people/Certainty4Eternity/61577169852716/ 👍🏼 Like this video 🔔 Subscribe for fortnightly episodes 📣 Share with friends curious about Catholicism & Christianity 🔔 If this video raised questions for you about Roman Catholicism or talking with Catholic friends about Jesus, check out Mark's published resources, including "Stepping Out in Faith", a collection of 11 stories from former Catholics. https://matthiasmedia.com.au/search?type=product&q=mark+gilbert #Catholicism #Protestantism #ChristianTestimony #Gospel #Certainty4Eternity

  3. Aug 31

    John Diacos on the Truth About the Rise of Orthodoxy & Catholicism

    Why are so many young Christians becoming Roman Catholic or Eastern Orthodox? Recent reports have highlighted growing numbers of young people, particularly young men, exploring historic Christian traditions. In this conversation, former Roman Catholic Mark Gilbert and Eastern Orthodox backgrounded John Diacos explore why this is happening, the six most common reasons people convert, and how Christians can thoughtfully and lovingly respond. Rather than relying on stereotypes or internet debates, this discussion examines the deeper spiritual questions drawing people toward Catholicism and Orthodoxy, including truth, community, spiritual discipline, history and the search for certainty. Whether you're Protestant, Catholic, Orthodox, or simply exploring Christianity, this conversation aims to help you better understand these movements and keep the focus on the gospel of Jesus Christ. Timestamps 00:00 Why are so many becoming Catholic & Orthodox? 00:47 Meet John Diacos & Mark Gilbert 01:16 The surprising rise in conversions 02:00 Six reasons people convert 06:18 Why young people want historic Christianity 11:36 How social media is influencing conversions 18:59 Should Protestants evangelise Catholics? 27:13 Can people outside the Church be saved? 32:04 Roman Catholicism and salvation 40:04 Salvation vs Theosis 44:31 Do the sacraments save? 59:36 Apostolic succession explained 1:10:50 The best way to share the gospel 1:13:41 Closing prayer John's Youtube Channel:  @EvangelisingEasternOrthodoxy  John's Training Course eeo.net.au Certainty for Life certaintyforlife.com #Catholic #Orthodox #Christianity #Protestant #Apologetics 💬 Got a question? Leave it in the comments or DM us on socials. We might feature it in an upcoming episode! 📲 Stay Connected 📸 Instagram @certainty4eternity | 📘 Facebook Certainty4Eternity 👍🏼 Like this video 🔔 Subscribe for fortnightly episodes 💬 Comment with your questions 📣 Share with friends curious about Catholicism & Christianity 🔔 If this video raised questions for you about Roman Catholicism or talking with Catholic friends about Jesus, check out Mark's published resources, including "Stepping Out in Faith", a collection of 11 stories from former Catholics. https://matthiasmedia.com.au/search?type=product&q=mark+gilbert

  4. Aug 13

    The Best Books for Understanding Roman Catholicism

    How do you share the gospel with your Catholic friends if you don't fully understand Catholicism yourself? In this episode of the Certainty4Eternity Podcast, Mark and Rayne share the books, Bible studies, courses and online resources that have helped thousands of Protestants better understand Roman Catholic theology and have clearer, more loving conversations about Jesus. From Gregg Allison's Roman Catholic Theology and Practice, Leonardo De Chirico's books, or our very own Mark Gilbert's The God Who Saves, Talking with Catholics About Jesus, and other practical evangelism resources, this episode is designed to equip Christians who want to faithfully proclaim the gospel while accurately understanding Roman Catholic teaching. Whether you're a pastor, youth leader, Bible study leader, or simply have Catholic family and friends, these recommendations will help you move beyond common misconceptions and communicate the gospel with confidence and compassion. In this episode: Why many Protestants struggle to understand Catholicism Why young Christians are being drawn toward Catholicism The best books on Roman Catholic theology Bible studies to use with Catholic friends Resources for pastors, churches and small groups Practical advice for sharing the gospel with Catholics If you enjoy these conversations, please like this video, subscribe, and share it with your church, pastor or Bible study group so more Christians can be equipped to speak about Jesus with clarity and love. Timestamps 00:00 Why Protestants need better resources on Catholicism 02:12 An email from a pastor asking for help 05:18 Why Protestants often talk past Catholics 11:19 Gregg Allison's Roman Catholic Theology and Practice 12:50 Leonardo De Chirico's best books 16:51 The God Who Saves Bible study 25:38 The Road Once Travelled 29:00 Talking with Catholics About Jesus course 31:29 The Nicene Creed and understanding Catholicism 37:20 How you can help equip more Christians Gregg Allison's Book: Roman Catholic Theology & Practice, an Evangelical Assessment https://www.amazon.com.au/Roman-Catholic-Theology-Practice-Evangelical/dp/1433501163 Leonardo De Chirico's Books: Same Words, Different Worlds https://www.amazon.com.au/Same-Words-Different-Worlds-Evangelicals/dp/1789743605 Tell Your Catholic Friend https://tinyurl.com/sfc29wwd Christian's Pocket Guide to the Papacy https://tinyurl.com/msepjxw6 Mark Gilbert's Books & Resources: https://matthiasmedia.com.au/search?type=product&q=mark+gilbert Reformanda Initiative Podcast: https://www.youtube.com/@UCmfC5IWjlhJ7owMhT-ESIJA or search Reformanda Initiative wherever you get your podcasts 💬 Got a question? Leave it in the comments or DM us on socials. We might feature it in an upcoming episode! 📲 Stay Connected 📸 Instagram @certainty4eternity | 📘 Facebook Certainty4Eternity 👍🏼 Like this video 🔔 Subscribe for fortnightly episodes 💬 Comment with your questions 📣 Share with friends curious about Catholicism & Christianity

  5. Jul 18

    Why Catholics Do These Things: Mary, the Rosary, Relics & Lent

    Why do Catholics pray to Mary? Why do they use rosary beads? What are relics? Why do Catholics celebrate Ash Wednesday and Lent? And where do these practices come from? In this episode of Certainty for Eternity, Mark Gilbert and Rayne Orange explore some of the most recognisable practices in Roman Catholicism - not simply to critique them, but to understand why they exist and what they reveal about Catholic theology. Joined by Dr Lauren Montenegro, a Protestant researcher completing her PhD on Marian apparitions while living in France, the discussion explores the history, theology and lived experience behind Catholic devotion to Mary. Topics include: • Why Catholics pray to Mary • The history and purpose of the Rosary • Ash Wednesday and Lent explained • Relics and miraculous medals • Marian apparitions and pilgrimage • The Stations of the Cross • Martin Luther, repentance and the Reformation • How Protestants can have gracious conversations with Catholic friends Whether you're Protestant, Catholic, or simply curious about Christianity, this conversation aims to replace assumptions with understanding while keeping Jesus at the centre. Subscribe for more conversations helping Christians make sense of Catholicism through Scripture, history and gracious dialogue. Timestamps 0:00 Introduction 1:11 Catholic culture and why Mary matters 4:45 Ash Wednesday, Lent and penance explained 22:47 Stations of the Cross 26:51 Relics and Catholic devotion 43:15 Dr Lauren Montenegro joins the conversation 50:42 The Rosary and praying to Mary 59:26 Statues, miraculous medals and Marian devotion 1:12:03 Should Protestants keep Catholic souvenirs? 1:17:28 How to lovingly talk with Catholic friends We'd love to hear from you: Which Catholic practice surprised you most? 💬 Got a question? Leave it in the comments or DM us on socials. We might feature it in an upcoming episode! 📲 Stay Connected 📸 Instagram @certainty4eternity | 📘 Facebook Certainty4Eternity 👍🏼 Like this video 🔔 Subscribe for fortnightly episodes 💬 Comment with your questions 📣 Share with friends curious about Catholicism & Christianity 🔔 If this video raised questions for you about Roman Catholicism or talking with Catholic friends about Jesus, check out Mark's published resources, including "Stepping Out in Faith", a collection of 11 stories from former Catholics.https://matthiasmedia.com.au/search?type=product&q=mark+gilbert #Catholicism #Protestant #Christianity #Mary #Rosary #CatholicChurch #Apologetics #Reformation #Bible #Jesus

  6. Jun 30

    I Met the Pope... Before Hearing the Gospel for the First Time

    Many Roman Catholics first encounter the biblical gospel at university. Why? In this episode, Mark shares his remarkable story of meeting the Pope as a committed Roman Catholic before arriving at university where a simple conversation with Protestant Christians led him to hear the gospel for the very first time. Together we explore why university campuses create unique opportunities for Christians to have meaningful conversations with Catholic friends, how to navigate differences in language and belief, and why long-term friendships often become the context where lives are changed. We're also joined by Natalia Reed, who with experience across Chile, Spain and Germany, shares her experience of speaking with Roman Catholics across Europe and the unique challenges Christians face in predominantly Catholic cultures. Whether you're a university student, part of a campus ministry, or simply want to share Jesus more clearly with Catholic friends and family, this conversation is packed with practical encouragement and real-life experience. If you'd like more resources to help you lovingly share the gospel with Catholics, subscribe and join us for each episode. ⏱ Chapters 00:00 Introduction 00:45 Why university is such an important mission field 03:20 Mark's journey from Catholicism to hearing the gospel 09:38 Why university creates unique gospel opportunities 16:25 Should Christians attend Catholic universities? 19:37 What happens to these friendships decades later? 28:06 Natalia's experience sharing Jesus across Europe 35:24 Practical advice for talking with Catholic friends 43:50 Final encouragement for Christians on campus Subscribe for more conversations helping Christians understand Catholicism and share the gospel with clarity, confidence and compassion. 💬 Got a question? Leave it in the comments or DM us on socials. We might feature it in an upcoming episode! 📲 Stay Connected 📸 Instagram @certainty4eternity | 📘 Facebook Certainty4Eternity 👍🏼 Like this video 🔔 Subscribe for fortnightly episodes 💬 Comment with your questions 📣 Share with friends curious about Catholicism & Christianity 🔔 If this video raised questions for you about Roman Catholicism or talking with Catholic friends about Jesus, check out Mark's published resources, including "Stepping Out in Faith", a collection of 11 stories from former Catholics.https://matthiasmedia.com.au/search?type=product&q=mark+gilbert 📖 Want to learn more about engaging conversations with Catholics and Mark's Ministry with C4E?Visit:https://encministries.org.au/ministry/ministry-to-roman-catholics/ #Christianity #Catholic #Gospel #Evangelism #University #Bible #Jesus #ChristianPodcast #Apologetics #Faith

  7. Jun 23

    Do Miracles Prove Catholic Doctrine?

    Do miracles prove Catholic doctrine? Can Marian apparitions, Eucharistic miracles, and claims of healing be trusted as evidence of truth? And how should Christians think about extraordinary experiences that seem impossible to explain? In this episode of Certainty for Eternity, Mark and Rayne explore how miracles function within Roman Catholic theology and compare that with the biblical understanding of faith, revelation, and the role of signs and wonders. They discuss Thomas Aquinas' definition of miracles, Marian apparitions such as Lourdes and Fatima, miracles associated with saints, answered prayer, and why Protestants and Catholics often interpret miraculous events very differently. Most importantly, they ask a foundational question: 👉 What should Christians ultimately trust: miracles, experiences, church authority, or Jesus Christ revealed in Scripture? Whether you've experienced something you can't explain, have Catholic friends who point to miracles as evidence for their beliefs, or simply want to understand this topic more deeply, this conversation will help you think biblically about miracles and faith. Timestamps 00:00 What is a miracle? 00:16 Personal stories of answered prayer 05:15 Mark's unusual experience at a Catholic youth camp 06:33 Thomas Aquinas and the Catholic definition of miracles 08:40 How miracles function in Roman Catholicism 12:29 Miracles as a support for faith 15:19 Faith in Catholicism vs Protestantism 18:41 Signs and wonders in the New Testament 22:08 Can miracles prove God? 24:19 Lourdes and the Immaculate Conception 26:01 Marian apparitions and psychological explanations 27:18 Miracles and canonising saints 29:11 Can miraculous events be acts of judgment? 33:30 How Catholic doctrine develops around miracles 34:33 Fatima and the Miracle of the Sun 36:11 How to discuss miracles with Catholic friends 38:01 Why Jesus is better than signs and wonders 43:50 Practical advice for conversations with Catholics 46:16 What miracles should ultimately point us toward? 47:08 Should Christians teach in Catholic schools? Resources Mentioned ▶ Nature-Grace Interconnection Episode (Sacrament & Experience) https://youtu.be/u0437wK9Ur8?si=yk-6ZURPSSg5ctfF ▶ Interview with Rachel Ciano https://youtu.be/CVTOiiFATXI?si=F1mM8vufCPqmB1Du If you enjoy thoughtful conversations about Catholicism, Protestantism, church history, theology, and how to share Christ with confidence, consider subscribing and turning on notifications. Got a question? Leave it in the comments or DM us on socials. We might feature it in an upcoming episode! 📸 Instagram @certainty4eternity | 📘 Facebook Certainty4Eternity 👍🏼 Like this video 🔔 follow for fortnightly episodes 💬 Comment your questions 📣 Share with friends curious about Catholicism & Christianity 🔔 If this video raised questions for you about Roman Catholicism or talking with Catholic friends about Jesus, check out Mark's published resources, including "Stepping Out in Faith", a collection of 11 stories from former Catholics.https://matthiasmedia.com.au/search?type=product&q=mark+gilbert 📖 Want to learn more about engaging conversations with Catholics and Mark's Ministry with C4E?Visit:https://encministries.org.au/ministry/ministry-to-roman-catholics/

  8. Jun 5

    How Christians Can Share Jesus Through Sport

    Sport might be one of the most overlooked opportunities Christians have to build genuine relationships and talk about Jesus. In this episode of Certainty4Eternity, Mark and Rayne explore why sporting communities often create surprisingly open conversations about faith -especially with people from Catholic backgrounds. From CrossFit gyms to surf clubs, rugby teams and local sporting communities, they discuss how integrity, belonging, community and long-term relationships can point people toward Christ. They’re also joined by Peter from 360 Sports / Fellowship of Christian Athletes Australia, who shares powerful stories of discipleship, sport ministry, and how God is using sporting environments to reach people with the gospel. Whether you play competitive sport, coach a team, watch from the sidelines, or simply want to live openly as a Christian in everyday life, this conversation will encourage you to think differently about mission, friendship and faithful presence. ⏱ TIMESTAMPS 00:00 – Why talk about sport and faith? 02:15 – Why sport creates gospel conversations 05:16 – Why Catholics often open up in sporting communities 09:18 – Christian integrity on the sporting field 13:10 – 5 practical tips for sharing Jesus through sport 17:42 – Wearing your Christian identity naturally 20:20 – Peter on faith, rugby & ministry 25:06 – Discipling someone from a Catholic background 31:16 – Why evangelism starts where people already are 📌 Learn more about 360 Sports / FCA Australia: https://fca360sports.au If this episode encouraged you, consider subscribing, sharing the video, and leaving a comment with your own experiences of faith and sport. #Christianity #Catholicism #SportMinistry #Jesus #ChristianPodcast #CrossFit #Evangelism #FaithAndSport #Protestant #Gospel 💬 Got a question? Leave it in the comments or DM us on socials. We might feature it in an upcoming episode! 📲 Stay Connected 📸 Instagram @certainty4eternity | 📘 Facebook Certainty4Eternity 👍🏼 Like this video 🔔 Subscribe for fortnightly episodes 💬 Comment with your questions 📣 Share with friends curious about Catholicism & Christianity 🔔 If this video raised questions for you about Roman Catholicism or talking with Catholic friends about Jesus, check out Mark's published resources, including "Stepping Out in Faith", a collection of 11 stories from former Catholics. https://matthiasmedia.com.au/search?type=product&q=mark+gilbert 📖 Want to learn more about engaging conversations with Catholics and Mark's Ministry with C4E?Visit: https://encministries.org.au/ministry/ministry-to-roman-catholics/

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About

C4E exists to help people share the good news about Jesus with people from a Roman Catholic background. Join us to hear insightful conversations for grown-ups and teens so that you can better understand Catholicism and have better conversations with your Catholic friends

Information

  • Creator
    Mark Gilbert
  • Years Active
    2025 - 2026
  • Episodes
    29
  • Rating
    Clean
  • Copyright
    © 2026 Mark Gilbert
  • Show Website
    Certainty4Eternity

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