How do we honor the rich history of Lutheranism while reaching people with the Gospel in a rapidly changing world?

In this episode of the Red Letter Disciple Podcast, Zach Zehnder welcomes Seth Kasten, creator of the Scholastic Lutherans YouTube channel, for a thoughtful conversation about Lutheran theology, tradition, worship, and discipleship.

Seth shares his journey from a nondenominational upbringing to becoming a confessional Lutheran, explaining how his study of Scripture and church history led him to embrace Lutheranism. He also introduces Lutheran scholasticism and explains why the theological insights of the Reformation and the centuries that followed still matter today.

But the conversation quickly moves beyond history into some of the most important questions facing the Lutheran Church Missouri Synod.

Are Lutheran churches free to worship differently? Does subscribing to the Lutheran Confessions require weekly communion? What does adiaphora actually mean? And how much freedom should congregations have to innovate in order to reach new people?

Zach and Seth approach some of these questions from different perspectives. Zach emphasizes the importance of innovation, evangelism, and reaching people in today’s culture, while Seth highlights the importance of preserving historic Christian worship and the traditions entrusted to the church.

The two also find significant common ground on discipleship. They discuss whether Lutherans sometimes become so concerned about works righteousness that they neglect spiritual disciplines, sanctification, and practical guidance for living as followers of Jesus.

Along the way, Seth shares several historic Lutheran devotional practices, including daily prayer, self-examination, and the use of the Psalms.

Finally, Zach asks Seth to complete one sentence: “The future of Lutheranism needs more…”

His answer brings the conversation back to families, discipleship, and the responsibility of raising the next generation in the Christian faith.

If you’re a Lutheran pastor, church leader, or Christian who cares about the future of the church, this episode offers a meaningful conversation about preserving what matters while considering what needs to change.

Today’s episode is brought to you by Child Beyond International (CBI).

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Resources Mentioned

• • Scholastic Lutherans on YouTube – Seth’s channel exploring historic Lutheran theology, scholasticism, and the Lutheran Confessions.

  • The Confessing Lutheran Blog – Seth’s theological blog featuring Lutheran apologetics, church history, and historic theology.

  • Scholastic Lutherans on X (@GerhardsGhost) – Seth’s social media presence, featuring Lutheran theology, historical quotations, and discussions.

    Treasury of Daily Prayer – Concordia Publishing House – Daily Scripture readings, prayers, Psalms, and historic Lutheran devotional material organized around the church year.

Key insights from the episode

• Lutheranism has a rich theological heritage worth recovering. Seth argues that historic Lutheran theology combines faithfulness to Scripture with an appreciation for the wisdom of the Christian church throughout history.
• Justification should lead to intentional discipleship. Zach and Seth agree that grace is foundational, but Christians also need practical guidance for growing in holiness, fighting sin, and becoming more like Jesus.
• The Lutheran Confessions require historical context. Seth explains why statements about worship practices should be interpreted in light of the circumstances and theological controversies in which they were written.
• Weekly communion is valuable, but is it mandatory? Seth argues that the Confessions encourage frequent reception of the Lord’s Supper without necessarily requiring every Lutheran congregation to celebrate communion every Sunday.
• Adiaphora creates freedom, but not unlimited independence. Worship practices that Scripture neither commands nor forbids are generally free, yet Seth emphasizes their connection to church unity, historical continuity, and avoiding unnecessary division.
• Tradition and innovation don’t have to be enemies. Zach and Seth explore how the church can benefit from people passionate about preserving historic practices and others who are gifted at discovering new ways to reach people.
• The future of Lutheranism begins at home. Seth believes that well-catechized children, particularly through intentional spiritual leadership from fathers and families, are essential to the church’s future.

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