God's Unbroken Promise & Unfailing Word

Summary

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Podcast Summary: "God's Unbroken Promise & Unfailing Word"

Podcast: Ultimately with R.C. Sproul
Host: Ligonier Ministries
Episode Date: July 1, 2026

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Episode Overview

In this episode, R.C. Sproul explores the reliability of God's promises in contrast to human frailty and broken word. Drawing on the pivotal Old Testament episode of God's covenant with Abraham (Genesis 15), Sproul reflects on how believers can find ultimate assurance and perspective—not in what they see or feel, but in the unbreakable word of God. The discussion also addresses the challenge and necessity of faith when God's presence is not perceptible, and why this trust is central to the Christian experience.

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Key Discussion Points & Insights

Our Nature vs. God’s Nature

• Human Tendency to Break Promises

  • Sproul opens the episode by highlighting humanity’s default: "We by nature are covenant breakers" (00:00).
  • Human words are unreliable: "We are by nature people whose words cannot always be trusted" (00:04).

• God’s Unbreakable Word

  • In stark contrast: "But God's word cannot be broken" (00:07, 04:19).
  • The reliability of God is a recurring assurance throughout the episode.

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Genesis 15: The Smoking Oven & Burning Torch

• A Most Unusual ‘Life Verse’

  • Sproul humorously recounts being asked for his “life verse,” surprising people by selecting Genesis 15:17:
    • "That night when the sun had set this smoking oven and burning torch passed between the pieces."
  • He explains why: The verse dramatically illustrates the seriousness of God’s promise (00:23–01:32).

• Ancient Covenant Ritual

  • Retelling the Genesis 15 story, he details how God had Abraham cut animals in half and lay them in a pathway, a “grisly ritual” symbolic of ancient covenant-making (01:55–02:22).

• God’s Solemn Oath by Himself

  • The symbolism is explained:
    • "God, manifesting himself as the burning fire, moves between these pieces and symbolically is saying... if I don't keep my word, may I be torn asunder as you have cut these animals in two." (02:50)
    • “I am promising you and swearing not by my mother's grave. I don't have a mother. I'm not swearing by the earth, that's my footstool. I'm not swearing by the heavens, that's my abode. I'm swearing by myself.” (03:12)
  • Notable reflection:
    • “If I break my word, may the immutable deity suffer mutation. I'm swearing by my holy character.” (03:28)

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Application: Living by God’s Unseen Presence

• Abraham’s Example

  • Abraham’s trust did not rest in feelings or sight:
    • "Abraham... was a man who lived the rest of his days trusting not in what he saw, not in what he felt, but he trusted in the word of God." (04:42)

• Faith in the Absence of Sight

  • The Christian struggle, as Sproul frames it:
    • “The hardest thing about being a Christian is believing and trusting and living on the basis of one you've never seen.” (04:56)
    • Candid honesty about experience:
      • "I cannot see Him. I can't hear Him. I can't even feel Him. But I know he's here because he said he would be here..." (05:12)

• Ultimate Assurance

  • The present reality:
    • “But in the meantime, we have his word.” (05:43)

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Notable Quotes & Memorable Moments

• “If I break my word, may the immutable deity suffer mutation. I'm swearing by my holy character.” — R.C. Sproul (03:28)
• “The hardest thing about being a Christian is believing and trusting and living on the basis of one you've never seen.” — R.C. Sproul (04:56)
• "But God's word cannot be broken." — R.C. Sproul (00:07, 04:19)
• “I know he's here because he said he would be here...” — R.C. Sproul (05:12)

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Important Segment Timestamps

• 00:00: Introduction – Human untrustworthiness & God’s reliability
• 00:23: Genesis 15 life verse anecdote
• 01:32: God’s promise to Abraham, covenant ritual explained
• 02:50: God’s self-binding oath and symbolism
• 04:16: Re-emphasis on human and divine contrasting natures
• 04:42: Abraham models faith beyond sight or feeling
• 04:56: The core struggle of faith – trusting the unseen Christ
• 05:43: Assurance: We have God’s word now, sight will come later

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Conclusion

R.C. Sproul closes by offering listeners a profound framework for finding perspective: God’s unbreakable promises are the Christian’s ultimate anchor. Whether or not we can see, hear, or feel God, the unfailing word of God steadies faith and directs our lives toward what matters most—what matters ultimately.

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Transcript

[RC Sproul]

We by nature are covenant breakers.

[Assistant Speaker]

We are by nature people whose words

[RC Sproul]

cannot always be trusted. But God's word cannot be broken.

[Assistant Speaker]

There's this crazy thing that I don't

know where it came from in Christian circles where when we're at conferences and people come up to me with their Bible and ask me to write my life verse, sign their Bible and write my life verse. And I said, I'm not sure what a life verse is, but I frantically thought about different places that I could sign. And so I finally came up with one. And there was a little devilishness in my selection in Genesis 15:17, which I write it down, and invariably people will come back 10 or 15 minutes later after they look it up, scratching their head and saying, did you mean to write this verse? And I say, yes, it's that verse in Genesis 15:17 where it says, and that night when the sun had set this smoking oven and burning torch passed between the pieces. And they look at me and say, that's your favorite verse. I say, yeah, that's my favorite verse. Why is that your favorite verse? Because if you look at Genesis 15,

[RC Sproul]

it is the occasion in which God made a promise to Abraham. And Abraham said to God, how can I know for sure. That you will do what you say you will do?

[Assistant Speaker]

And God condescended to Abraham's weakness, to his unbelief. And he said, abraham, go and get these goats and these animals and cut them in half and put them as

a path like a gauntlet on the ground.

And then after Abraham obeyed and cut up these animals in this grisly ritual

and laid them end to end in

[RC Sproul]

a pathway, God made Abraham have a deep sleep. And during that sleep, behold this burning oven and flaming torch pass between the pieces. The author of Hebrews understood that. That what is going on here in this theophany is that God, manifesting himself

[Assistant Speaker]

as the burning fire, moves between these pieces and symbolically is saying to Abraham as he's cutting a covenant with him, he said, abraham, if I don't keep my word, may I be torn asunder as you have cut these animals in two. I am promising you and swearing not by my mother's grave. I don't have a mother. I'm not swearing by the earth, that's my footstool. I'm not swearing by the heavens, that's my abode. I'm swearing by myself.

[RC Sproul]

And because God could swear by nothing greater, he swore by his own being, saying, if I break my word, may the immutable deity suffer mutation. I'm swearing by my holy character. Now, when I make a promise to you, you know that it's possible I will break it. We by nature are covenant breakers.

[Assistant Speaker]

We are by nature people whose words

[RC Sproul]

cannot always be trusted. But God's word cannot be broken. And Abraham, who becomes the father of the faithful, was a man who lived the rest of his days trusting not in what he saw,

[Assistant Speaker]

not in what

[RC Sproul]

he felt, but he trusted in the word of God. Now, friends, the hardest thing about being a Christian is. Is believing and trusting and living on the basis of one you've never seen. Do you know that Jesus is in the room this morning? He's here.

[Assistant Speaker]

How do I know it?

[RC Sproul]

I cannot see Him. I can't hear Him. I can't even feel Him. But I know he's here because he said he would be here someday.

[Assistant Speaker]

We'll see him face to face, and the light of his countenance will flood us with glory. But in the meantime,

[RC Sproul]

we have his word.

[Narrator]

You've been listening, Ultimately with RC Sproul. This podcast is produced by Ligonier Ministries. If you haven't already, make sure you download the free Ligonier app. To access a full teaching library of videos, articles, and other resources, just search for Ligonier in your app store to get started.