Episode Overview

Podcast: Things Unseen with Sinclair B. Ferguson
Episode Title: Murdering in Our Hearts
Date: March 16, 2026
Host: Sinclair B. Ferguson

This episode continues a reflective series on the Ten Commandments, focusing in depth on the sixth commandment: "You shall not murder." Dr. Ferguson explores the deeper, spiritual dimension of the commandment as interpreted by Jesus in the Sermon on the Mount, challenging listeners to consider how the commandment reaches beyond physical acts to the intents and attitudes of the heart.

Key Discussion Points & Insights

The Ten Commandments as Friends, Not Enemies

• Sinclair B. Ferguson opens by reframing the Ten Commandments:
  • "They are, after all, meant to be the Christian's friends, not his enemies. They're like guards posted around our life to keep us safe and faithful." (00:15)
  • Emphasizes the value in lingering and reflecting on each commandment, not rushing through them.

Childhood Memories & Initial Relief

• Ferguson recounts his early experience memorizing the commandments and watching The Ten Commandments film as a child:
  • Shares how as a child, Commandment 6 initially seemed the easiest to keep.
  • "But at least with number six, you could relax and say, with the rich young ruler, this commandment I have kept from my childhood upwards." (01:00)

The Sermon on the Mount: A Deeper Standard

• Key Insight: Jesus expands the sixth commandment in Matthew 5, showing that murder is an issue of the heart, not just outward action.
• Ferguson explains:
  • "You can murder with your mouth as well as with a machine gun, and you can lacerate with a look as well as with a knife, and you can kill with a computer keyboard as well as with a blunt instrument. That's what Jesus said this Commandment really meant." (01:30)
  • The commandments thus have "an inside as well as an outside." (02:00)

Understanding the Commandments: Westminster Larger Catechism

• Ferguson introduces principles from the Westminster Assembly's Larger Catechism that help interpret the commandments:
  • Rule 2: The commandment is spiritual—reaching the understanding, will, affections, and all powers of the soul, as well as words and actions. (03:00)
  • Principle 4: When a duty is commanded, the contrary sin is forbidden, and vice versa. Promises and threatenings are also paired in understanding. (03:15)
  • Principle 6: Under one duty or sin, all of the same kind and all related means, causes, and occasions are included. (03:30)
  • Collective Responsibility: Commandments apply not just to ourselves but involve helping others avoid sin or fulfill duties as appropriate to their situation. (03:45)
• "I think you can tell that they had been listening to the Lord Jesus, that every commandment has an outside and an inside." (04:00)

The True Challenge: The Heart

• The real challenge, Ferguson argues, is not mere external conformity but an "inner spiritual condition." (04:10)
• "It's not enough for the outside to be washed. The inside needs to be washed too." (04:15)

Dependence on Christ’s Spirit

• Ferguson closes with pastoral encouragement:
  • "It's only by the Spirit of the Lord Jesus Christ that the righteous requirements of the law will ever be fulfilled in us. So let's look to the Spirit of Christ today to enable us to live like Christ." (04:25)

Notable Quotes & Memorable Moments

• On the spiritual depth of the commandments:
  "You can murder with your mouth as well as with a machine gun, and you can lacerate with a look as well as with a knife, and you can kill with a computer keyboard as well as with a blunt instrument." (01:30)

• On true obedience:
  "Every commandment has an outside and an inside. And the real significance of the commandments and the real challenge of the commandments is not just about our outward behavior, but about our inner spiritual condition." (04:10)

• Closing exhortation:
  "It's only by the Spirit of the Lord Jesus Christ that the righteous requirements of the law will ever be fulfilled in us. So let's look to the Spirit of Christ today to enable us to live like Christ." (04:25)

Important Segment Timestamps

• 00:08 – Introduction to the episode focus: the sixth commandment
• 01:00 – Reflections on learning the commandments in childhood
• 01:30 – The deeper meaning of "You shall not murder" (Sermon on the Mount)
• 03:00–03:45 – Principles from the Westminster Larger Catechism for understanding commandments
• 04:10 – The heart as the focus of true obedience
• 04:25 – Call to rely on the Spirit of Christ

Summary

Sinclair B. Ferguson provides a thoughtful meditation on the sixth commandment, urging listeners not to rest complacently in outward obedience but to examine their hearts and attitudes. Drawing from Jesus' teaching and the Westminster Larger Catechism, he highlights the spiritual breadth of God’s law: it judges not just actions, but motives and affections. The episode encourages Christians to rely on Christ's Spirit for inward transformation, living by both the letter and spirit of the law.