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I recently watched a short film that still haunts me. It was actually from a comedy show, but it had such a sense of sadness to it. A man goes into a train station. At the counter, he holds up a photo for the ticket agent and he says, this is a bit of a strange question, but can you tell me how to get there? The ticket agent looks at the photo and she says, oh, yes, that's Millport. What you've got to do is get the train to a place called Largs and then you get the ferry. And the man says, no, I know how to get to Millport, but can you tell me how to get to there? And he points to the photo again. He says, I took that photo when I was about 16. That's me just there. That summer was amazing. Hanging out with friends all day, not worrying about tomorrow, just laughing, having a great time, jumping off the pier, sitting, swimming around. It was like summer seemed to go on forever. And after he reminisces about it for a while, he goes quiet. And then he says, I don't want to be here anymore. I want to be there. So can you tell me how do I get there? And she looks at him and says, you can't do that. I'm sorry. So he says, ah, just give me a return to Largs then. Places never stop changing. People too. They can't stay the same. And neither can we. Often that simple fact is enough to break our heart. But there is one who is the same yesterday, today, and forever. When we talk about God like this, we're talking about his immutability. Immutability is the biblical idea that God is unchanging in his character, will, and his promises. James 1:17 puts it like, every good gift and every perfect gift is from above, coming down from the Father of Lights, with whom there is no variation or shadow due to change. Numbers 2 says, God is not man that he should lie, or a son of man that he should change his mind. In Malachi, chapter three, God says, I, the Lord do not change. Hebrews talks about the unchangeable character of his purpose. And in 2 Timothy we read that if we are faithless, he remains faithful, for God cannot deny himself. In other words, God cannot deny his own immutability. His unchangeability is unchangeable. The Westminster Shorter Catechism puts it like, God is a spirit, infinite, eternal, and unchangeable in his being, wisdom, power, holiness, justice, goodness and truth. Just think about that for a moment. There is no before or after with God as there is with us. There's no he used to be like that, but now he's like this. There's no such thing as the Old Testament God and the New Testament God. He was good, he is good, and he always will be good. And the same can be said about his power, his wisdom, his love, and so on. So how are we to understand those biblical passages that seem to speak of God as changing? Think for example of 1 Samuel 15 where God is said to regret having made Saul king. Doesn't that imply that he's changed his mind about Saul? No, in fact, that very same chapter, 1st Samuel, chapter 15 is quite explicit in saying that God is not a man, that he should have regret. How can an all knowing God, who is eternal and outside time and knows everything before it happens, suddenly realize that Saul isn't fit to be king? It's not as if any new information has come to light that God didn't already know. So God's mind hasn't changed. What has changed, of course, is Saul's behavior. Where it comes to describing the way God relates to his creatures, there is great variety, but that variety is down to the variety in them, not in Him. The same sun hardens clay, but also melts wax. Well, we might say the sun clearly changes. Sometimes it hardens, sometimes it melts. No, it's still the same sun. The character of the sun hasn't changed. What does change is the nature of the object on which the sun is shining. Another way to talk about God's immutability is that whereas you and I are always becoming, God is always being. We're always traveling. God is already there and has always been. We can develop or deteriorate, grow or decay, progress or regress, but with God there is no room for improvement. He has always been and always will be utterly and delightfully perfect in every way. One theologian puts it like all that is creaturely is in the process of becoming. The creature is changeable, constantly striving in search of rest and satisfaction, and finds this rest only in him who is pure, being without becoming. What a glorious prospect that is. Psalm 18 says, the Lord is my rock and my fortress and my deliverer, my God, my rock in whom I take refuge, my shield and the horn of my salvation, my stronghold. He can only be these things for us precisely because he is immutable. So yes, there are places we long to return. We want to know how to get there. That longing to return to a place which we will find to be perfect and unchanging. And just as it has always, always been. That longing has been put into our hearts so that we might seek the One who put it there, the Lord who is perfect and unchanging and just as he's always been.
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I'm Barry Cooper, and this is Simply Put, a podcast from Ligonier Ministries. Ligonier creates resources to help Christians know what they believe, why they believe it, how to live it, and how to share it. You can find these resources@ligonier.org and by the way, if you like Simply Put, please subscribe or write a review on your favorite podcast app. Discover more@simplyputpodcast.com.
Simply Put – “Immutability” (July 7, 2026) – Summary
In this episode of Simply Put, host Barry Cooper explores the doctrine of God’s immutability—His unchanging nature. Using a poignant story and accessible language, Barry explains why God’s lack of change is a foundation for Christian confidence, hope, and worship, and he helps believers make sense of biblical passages that seem to suggest God changes.
“Places never stop changing. People too. They can’t stay the same. And neither can we. Often that simple fact is enough to break our heart. But there is one who is the same yesterday, today, and forever.”
— Barry Cooper (01:38)
“In other words, God cannot deny his own immutability. His unchangeability is unchangeable.”
— Barry Cooper (03:00)
“There’s no he used to be like that, but now he’s like this. There’s no such thing as the Old Testament God and the New Testament God. He was good, he is good, and he always will be good.”
— Barry Cooper (03:39)
“It’s not as if any new information has come to light that God didn’t already know. So God's mind hasn't changed. What has changed, of course, is Saul’s behavior.”
— Barry Cooper (04:44)
“Whereas you and I are always becoming, God is always being. We’re always traveling. God is already there and has always been.”
— Barry Cooper (05:33)
“That longing has been put into our hearts so that we might seek the One who put it there, the Lord who is perfect and unchanging and just as he's always been.”
— Barry Cooper (07:36)
Summary:
Barry Cooper gently and persuasively unpacks the doctrine of immutability, illustrating why the unchangeableness of God is not only biblically sound but pastorally comforting for all believers seeking stability in a constantly changing world.