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How Does Truth Command Me?

Renewing Your Mind / R.C. Sproul
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September 12, 2026 12:01 am

How Does Truth Command Me?

Renewing Your Mind / R.C. Sproul

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September 12, 2026 12:01 am

If you're not accountable for your life, then ultimately your life doesn't count. Today, R.C. Sproul reveals that a meaningful worldview must include the discipline of ethics, and our ethics cannot be divorced from the holy character of God. Get R.C. Sproul's video teaching series The Consequences of Ideas on DVD with your donation. You can also download the series and study guide, plus his digital teaching series A Blueprint for Thinking: https://gift.renewingyourmind.org/   Live outside the U.S. and Canada? Download both teaching series and the study guide with your donation: https://www.renewingyourmind.org/global   Meet Today's Teacher:   R.C. Sproul (1939–2017) was founder of Ligonier Ministries, first minister of preaching and teaching at Saint Andrew's Chapel, first president of Reformation Bible College, and executive editor of Tabletalk magazine. Renewing Your Mind is a donor-supported outreach of Ligonier Ministries. Explore all of our podcasts: https://www.ligonier.org/podcasts

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The basic foundation of our culture today is Moral relativism. And I call that a myth. Because what it has in common with a myth is that myths have no real correspondence ultimately. to objective truth. In other words, we are basing our civilization and our culture on a moral concept, ladies and gentlemen, that can't possibly be true.

If God does not exist, then everything is permitted. Those words are just as true today as when Dostoevsky first wrote them almost 150 years ago. If a society ceases to believe in God, then all statements about right and wrong are merely expressions of our personal preference. Welcome back to another Saturday edition of Renewing Your Mind. I'm your weekend host, Josh Mann, and we'll be wrapping up our study today in A Blueprint for Thinking.

In today's message, RC Sproll will help us to explore the topic of ethics. Explaining why a biblical worldview impacts not just how we think, but how we live. Today is your final opportunity to receive all five messages from A Blueprint for Thinking. As well as Dr. Sprohl's 35-part series, The Consequences of Ideas.

Donate today at renewingyourmind.org to receive lifetime downloadable access to all of these messages in the Ligonier app. We'll also send you a DVD copy of The Consequences of Ideas, along with a digital study guide. Let's join RC Sprawl now with today's message.

So far, in our examination of the chief elements that are necessary to construct a Christian life and worldview, we've considered briefly. Epistemology, the science of knowing, how we come to knowledge at all, how do we discern what things are true and what are not. We've looked briefly also at the task of metaphysics, which is man's attempt to probe those questions beyond what we can see and think and sense with the rest of our empirical powers. And then we looked at the character of God as being essential for understanding how we view the world and our lives. And then, at last, we examined.

how our understanding of mankind influences how we treat people, how we respond to God, and the like.

Now, in this fifth session, as we consider the elements of a life and worldview, We're going to look now at ethics. And during these moments together, we've had the special guest be with us on each occasion, Mr. Rodin's the Thinker. And I've mused as we've gone along over what it is that possibly has him so absorbed continuously in such deep and provocative cogitation. And I think I know the answer.

During the interim between the last lecture and this lecture, I had a private conversation with the statue and he revealed to me the subject matter of his heavy concentration. He said he's been thinking about the Beatles. Not the musical Beatles. Rodan doesn't have time for that. But rather.

The bugs that we call beetles. And the thinker was pondering this question Do beetles, Japanese beetles, Whatever kind of beetle is your favorite kind of beetle. He said, Do Beatles have consciences? The Beatles commit crimes against other beetles. Are there beetle quartz?

and Beetle Prisons. This is the kind of speculation that the artist has caught now and immortalized in stone.

Now, of course, I'm teasing. But the question is not a joke. Do other creatures in this world struggle with questions? of guilt. And of justice.

Do other creatures in this world struggle with matters of righteousness? Do Beatles care? whether other beetles behave in a morally appropriate way. Or is the subject? Of ethics and morality.

uniquely a human concern. There are those who are convinced in our day and age That ethics should be as important to us as it would be to Beatles, and no more. Because we are nothing. but more sophisticated garden variety beetles. Again, our anthropology.

determines ultimately Our ethics. How we view the importance of humanity will have tremendous influence. on how we behave. It's that simple.

Now, as I've used the blackboard on various occasions, I keep walking past these bookcases, and I promise you that none of these books were placed here as stage props or any of that like, but my eye keeps falling on this little book here, which is a leatherbound edition of C.S. Lewis's immortal work now called Mere Christianity. As many years as Lewis has been dead, this book still sells over 100,000 copies every year, just in the English-speaking world. mere Christianity. It's a book that, in simple terms, set forth the central claims of the Christian faith.

And has been useful, particularly among college students and intellectually oriented people, to give them an initial presentation of the cardinal tenets of Christianity. And as I was just leafing through this for old time's sake, I noticed the title of the very first chapter. It reads. Right. And wrong.

as a clue to the meaning of the universe. Right and wrong. as a clue to the meaning of the universe. It was Dostoevsky who said, pondering the pessimism of his age, of those who had declared the death of God, As he pondered the implications of that, Dostoevsky said, If there is no God, then all things are permissible. Immanuel Kant, who in many regards dug the grave of the classical defense of Christian theology.

In spite of his agnosticism with respect to proving the existence of God, Kant declared in his final writings, practically speaking, as I mentioned before, we must live As if There is a God. And though Kant banished God from theoretical thought. In his critique of practical reason, he went around to the back door of the house and where he banished God out the front door, he went around and opened the back door and ushered God back in on practical grounds. His argument for the existence of God was not theoretical, not rational, not empirical, but moral. Kant argued in this fashion.

For ethics to be meaningful. This is a simplified shorthand version of it. For ethics to be meaningful, There must be justice. That is, before anybody has a right to say you must, you ought, or you should. And everyone in this room has said that to somebody else.

You ought to do this. And you've all heard people give you rules and regulations. Cox said, before any of that can possibly be meaningful, there must be justice. Why? Because if there's no justice, why should we be concerned about doing what is right or doing what is wrong?

Who cares? He went on to argue that we can look around the world and we can see manifest injustice. We can see people who are rewarded, who don't deserve to be rewarded, and people who are punished and afflicted though they are innocent.

Some even cry out in despair. There is no justice.

Well, that's not altogether true. There is some justice, but I doubt if anyone in here would think there's enough. justice in this world. And if justice is thwarted at any point, Kant says, why should we be concerned about ethics?

So he says, there has to be justice. And he said, well, what would there have to be for there to be justice?

Well, there'd have to be a judge, and the judge would have to be just, and the judge would have to be omnipotent, and all the rest, and he'd have to be righteous himself, and we would have to survive the grave in order to go to a place where there is justice. And by the time Kant's finished on his practical argument, he's constructed almost the whole of the Christian faith with a God who is just, who promises a last judgment, holds every human being accountable for every action that we perform. But remember. What he said. He said, that doesn't prove that God exists.

Only He is saying That it proves the necessity of the existence of God for ethics to be meaningful. And if ethics are not meaningful somehow, Kant said, society ultimately becomes impossible. The 19th century saw people who were not inclined towards religious commitment and so on, throwing their hats in the air, rejoicing over their newfound freedom when God was banished from the universe. They say, no more teachers, you know, no more books, no more sassy looks, school's out. I don't have to listen anymore to this God who is dead, who's always running around shaking his finger in our face, saying, Thou shalt not do this and thou shalt not do that.

And if you do this, you're going to go to hell, and so on. Down with Moses, down with Yahweh, down with Jesus. Man is free now to carve out his own destiny. The good news of nineteenth century philosophy was that man is no longer accountable. to God.

The message of twentieth century philosophy. is that man no longer counts. And that's a simple step in logic, isn't it? If you're not accountable for your life, ultimately, That means ultimately your life doesn't count. That's what Dostoevsky was getting at.

That's what Lewis is saying here when he says, right and wrong is a clue. To the very meaning. of the universe. Because if there is no right... And there is no wrong.

There can't possibly be any meaning. And yet we glibly hear in every quarter in the United States of America. There are no absolutes. We've gone through a moral revolution. where preference has replaced duty, And special interests.

Replace law. I've had discussion after discussion with those involved in the arena of politics and law, and I hear the cliché over and over and over again, you can't legislate morality.

Now what that phrase used to mean, ladies and gentlemen, was that just because you pass a law does not guarantee that people's behavioral patterns are going to change. But now that phrase means that it is illegitimate for any branch of the government to be involved in the exercise of passing laws of a moral character. 'Cause morality is debt. There's no such thing as black and white. Right and wrong.

Goodness or badness, morality. become a relative matter. We have lived through the relativization. of ethics in our own generation. And I say to people who say you can't legislate morality, so what do you legislate?

The state bird? But even the state bird has moral ramifications and moral implications of ecology, if nothing else. How I drive my car with respect and with responsibility towards my neighbor is a moral matter. If you can't legislate morality, should we have laws against murder? If you can't legislate morality, should we have laws against theft?

These are moral matters. But our society really doesn't believe in total moral relativism. Because it understands, ladies and gentlemen. that in a situation, in an environment, of pure moral relativism.

Society is impossible. Historians have told us that every civilization, every culture in world history has been built upon the foundation of a philosophy. A religion or a mythology.

Something that gave unifying stability. to the culture. We have gone through, I'm convinced, three stages in American history. We went through the initial stage when the pilgrims came here of a theological foundation for our civilization. That then passed in the 18th century from a theological foundation to a philosophical foundation.

And now we are teetering precariously much as a fiddler on the roof on the basis of a mythological foundation. What do I mean by that? I mean by that, that the basic foundation of our culture today is. Moral Relativism. And I call that a myth.

Because what it has in common with the myth is that myths have no real correspondence ultimately. to objective truth. In other words, we are basing our civilization and our culture on a moral concept, ladies and gentlemen, that can't possibly be true. And that's why we can't live with it. That's why we are more and more every day at internal warfare.

Between and among various preference and special interest groups. I mean, we're in serious trouble. In Wichita, Kansas, thousands of people have been thrown in prison because they were involved in protesting abortion clinics where abortion in the third trimester was being performed legally.

So far that's the largest protest event centering on abortion. It would not surprise me. to see that issue. which I think is the most serious ethical issue that the United States of America has ever had to wrestle with in its history. And the fact that it is as nonviolent as it has been so far in our culture is only further testimony to the fact that people don't care about ethics in our culture.

In any other generation, it would have provoked a civil war. And it may still. in our culture. But what are the guiding ethical principles that control the life and worldview of the culture in which you live? I've mentioned Nietzsche already.

And I mentioned Nietzsche's work on biological heroism. Nietzsche also had much to say about ethics. Nietzsche made a distinction between what he called Master morality. and herd morality. when he called for the Superman to come down and create a new civilization.

He was asking that someone who would have the courage to do what he wanted to do. To live by his own rules, to live by his own standards. Nietzsche described his existential hero as somebody who built his home on the slopes of Vesuvius. He sailed his ship into uncharted seas. He shook his fist in defiance of God.

He created his own law. That's the existential hero. He doesn't answer to anybody else's rules, anybody else's regulation. He. does his own thing.

That was Nietzsche's hero, the master morality, the superman. who would dare to do what he wanted to do to exercise his own will to power. I disagree with all that. But one thing I agree with emphatically. with Lechey.

In his analysis of nineteenth century Europe, He said that nineteenth century Europe in the main, as a civilization, as a culture. lives according to a herd Morality. Let me write that down. A herd morality. Where have you heard that before?

Oh, we like sheep. I've been led astray. Did you ever really Watch. A flock of sheep move through a meadow And see the abrupt changes. They never go in a straight line.

They're all over the place. It's organized chaos, if you want a contradiction in turn. The one who happens to be in front, if it moves in this direction, everybody goes in that direction. His sheep obviously don't give a whole lot. Of careful ethical analysis in making decisions about which step they're going to take next.

They go with the flow. That's the American idea. Hey. Sit aloof. Yeah, just go with the flow.

Be cool. It's the herd morality. It's the dominant ethic in any mythologically conceived civilization. Every culture has what could be called taboos. Things that are frowned upon.

and other things that are affirmed. And when people do not think. About righteousness. When people do not have a carefully constructed view of God and of the world and of life. The thing that tends to influence their patterns of behavior.

Is the hurt? We are by nature. Conformists to whatever is in. Whatever is acceptable or expected of us in a given generation. Do you realize that the whole sexual ethic of the United States of America was turned upside down in less than ten years?

For centuries, for centuries, certain patterns of behavior were considered by civilized people. to be morally wrong. And in ten years. They were suddenly morally acceptable. Twenty years ago in this culture, if a young man and a young woman lived together without being married, it would have been scandalous.

It was such a taboo. Totally unacceptable socially. That's no big deal. It's a matter of course.

Now here's what I want to know. Did the rightness or wrongness change? The ethic didn't change. Ultimately. What changed was the instinct of the herd.

What changed was the social conventions. Most Christians, according to the Gallup polls that we've seen recently, live according to cultural, social conventions and not according to the law of God. Percentage-wise, just as many evangelicals are having abortions as secular people, pagans. You can't tell the difference between a pagan and a Christian in our culture. Because the dominant Basis of our morality is not coming from thoughtful meditation of the law of God, but it is coming from what is acceptable in our environment.

What the herd is doing. If ever there was a need for a reformation of ethics. It's now. Not only in government, and in the school, but especially in the church. Bottom line of Christianity.

is that we are called. To seek the kingdom of God and His righteousness. That's an ethical mandate. And if the rest of the world doesn't even believe there is such a thing as right or wrong, as I said, in a relativistic culture nobody's a consistent relativist. We know that.

You say that there are no absolutes except the absolute, that there's absolutely no absolutes. is a self-defeating state. People say they don't believe in any ultimate rules of right and wrong until you steal their property. The moment you take their private property, they're jumping up and down saying, that's not fair. That's not right.

Now the myth of moral relativism is modern man's attempt to create an ethical license for sin. To call evil good. And good evil. But of course, if there is no God, there is no good. There is no evil.

And it doesn't matter. But a Christian life and worldview. Seeks to establish The rules of thinking. The rules of determining how we know. What is true?

Because not everything that everybody says is true. Maybe that's what has him so preoccupied. Maybe he's sitting here wondering. Who in the world is speaking the truth? Who do you trust?

Who's telling the truth? How do you know? That's a question of epistemology. Ultimately, what is the truth? What is it?

A question of is-ness. What is real ultimately? That's a metaphysical question. Who is the truth? is a theological question.

How does the truth relate to me? And define me. is an anthropological question. and how the truth commands me. is an ethical question.

These are the elements. of a Christian life and worldview. Ignore one of them. and you will have a distorted view. Of the world?

and of your own life. In and of ourselves, we have no authority to command anybody. But the Bible's ethical demands do not come from us. They weren't concocted by a committee 2,000 years ago. Rather, the commands of Scripture come from the One who is truth itself.

The Lord Jesus Christ. and he has the only right to tell us how to live. You've been listening to the Saturday edition of Renewing Your Mind. The message you just heard concludes our study in a blueprint for thinking. Dr.

Sproll's five-part series exploring how to think like a Christian.

Next Saturday, we'll be starting a new series exploring the life and theology of the Apostle Paul. That means that today is your final opportunity to receive a blueprint for thinking, along with the consequences of ideas. Altogether, these two video teaching series offer 40 messages to help you understand the world you live in and how to respond with God's truth. When you donate today at renewingyourmind.org, you'll receive lifetime downloadable access to all of these messages in the Ligonier app. We'll also send you a copy of the DVD for the consequences of ideas, along with a digital study guide.

Throughout church history, there have been examples of miraculous conversions that powerfully display the transformation that the gospel brings. you might think of Augustine or John Newton. But there is perhaps no greater example than that of the Apostle Paul. Join us next week as we explore Paul's life and theology here on Renewing Your Mind.

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