02/09/2026
Do We Really Know What It Means to Repent?
Psalm 51 says something to everybody. It gives hope to people who have blown up their lives by doing something foolish and wrong and are experiencing the consequences of that foolishness.
The psalm also addresses people who think, “This is fine for David, but it isn’t for me. This is for people who really screw up. It’s not like I couldn’t make a huge mistake, I suppose, but I’m not going to. And I haven’t. So while it’s great for people who have really screwed up, it’s not for me.” That is a dangerous line of thought.
David the beloved, the man close to God’s heart, one of the godliest and greatest figures in the history of the world, was capable of life-exploding sin. And so are we. David needed repentance, and so do we.
Here’s what sin does: It plants land mines all throughout your life. Maybe yours haven’t blown up yet. That’s great. But they will blow up if you don’t deal with them. Repentance is the process of minesweeping your own heart. If you think you don’t need to sweep for mines, you are almost guaranteeing that your life will blow up.
But Psalm 51 also speaks to a third group of people: those of us in the middle of those two positions. We’re the people who acknowledge that there are things wrong with us, that we have things that could blow up our life. We know we need to change, and we’re trying to work on them. We’re trying to sweep for mines. Yet it seems like we never truly unearth them.
We never truly fix the problem. We get upset about these sins and sorry about them, especially when they cause little eruptions and create problems for us. When that occurs, we think we repent. We stop sinning for a while, but the next thing we know, we’re back doing it again. We never change.
If that describes you—if you are in this third group—Psalm 51 is for you too. It tells you how to change permanently, how to truly repent. This repentance involves seeing, confessing, mourning, and hating your sin. But there is more we can learn from David’s experience.
Repentance means cutting ourselves open to get the malignant growth of sin out—and cutting deep, deep down to extract it. If we find ourselves persisting in sin without any change, we likely aren’t cutting all the way. We must imitate two things that David does to cut himself deep enough.
See Sin as God Sees It
First, he makes sure he begins by seeing sin the way God sees it. He insists on it. We see this in verse 4, where he says, “Against you, you only, have I sinned and done what is evil in your sight.” Perhaps the most confounding problem humans have is our ability to do evil because we find a way to view it as good.
By way of illustration, most of us have a favorite photograph of ourselves. Why is it our favorite? Because it hides our flaws. Those of us with big noses, for example, know that if we take a picture from just the right angle, we can make the nose look less prominent. With the camera at just the right point of view, the size of the nose diminishes and the face looks wonderful. We can always find a point of view that hides reality.
This is why one ethnic group can wage open war on another ethnic group and argue, “They did something worse to us two hundred years ago. When you look at things from a historical perspective, what we’re doing isn’t so bad.” This is what David did after the killing of Uriah, saying, in essence, “From a certain point of view, I didn’t really kill Uriah. It was the Ammonites. It was the war that killed him, not me.”
But take a moment to realize what this behavior means. If we go to these lengths to justify any sins in our lives, we can end up doing it to justify atrocities we previously never could’ve imagined. Human beings have justified anything and everything throughout history—because we can always find a way to look at something that makes it seem not so bad.
We have to have a single point of view that stands apart from our individual ones, one that actually sees things as they are and knows how to deal with them. David found it. Rather than using a flawed, human understanding that leads to messing up again and again, David looked at his sins the way God looks at them.
Throw Away the Excuses
The second thing David does is take full responsibility for his actions. He throws away the excuses. In verses 1 and 2, he refers to what he’s done as his “transgression” and “iniquity,” both of which indicate deliberate rebellion. Most interesting is that in verse 6 he says, “You desired faithfulness even in the womb.”
What he is saying is this: “I sinned because I wanted to. I freely chose it, and I take full responsibility. I make no excuses. I can’t blame the pressures of being a king. I can’t blame Bathsheba. I can’t blame anybody. I can’t blame anything. I take all the blame on myself. There wasn’t truth in my inner self, as God wanted—just my own desire.”
The same is true for us. When we sin, it’s not because of our circumstances. It’s not because of someone else’s actions. It’s because of what’s inside us—our inner parts. We wanted to do it.
Don’t ever, ever, tell yourself, “Circumstances made me do it.” Circumstances might shape our sin, but they never cause our sin. Sin is always and only caused by our own inner desires.
We shouldn’t dare blame anybody or anything for our own failure. The temptations, the mistreatment, the things people do to us will undoubtedly change the specifics of our sin. But they don’t give birth to the sin. The sin is birthed in our own hearts.
Failure to realize this is what leads to false repentance, to little more than complaining. We tell God, “I’m sorry for what happened. But my parents did this to me. My stress level did this. I was so tired. My wife did this. My husband did this,” and then we tell ourselves we’ve repented. And yet we still feel bad about what we did, and we even do it again. Unless we cut all the way to our core, we can’t fully remove the sin.
Now, after the incision is made, how do we actually remove sin from our hearts?
Remove the Sin
First, David softens and melts his heart by taking it to the grace of God. A metallic object must be repaired by heating it up and melting it down because that’s the only way you can reshape it and make it whole again. In the same way, instead of hammering his heart, David offers it to the grace and the covenant mercies of God. Right away in verse 1, David says he’s going to God “according to [his] unfailing love.”
Why does David fill his heart with God’s unfailing love? How could that transform him? When David looks at this unfailing love and this (to him) inexplicable, incredible fact that the holy and just God has somehow bound himself to be gracious to us no matter what, no matter the cost, it reveals to David why he sinned in the first place. Because he had lost his first love.
Second, David forsakes his sin. From verse 10 onward in Psalm 51, we see him create a whole new life. It’s a life of obedience: “Renew a steadfast spirit within me” (v. 10). It’s a life of intimacy with God: “Do not cast me from your presence or take your Holy Spirit from me” (v. 11). It’s a life of continual repentance: “My sacrifice, O God, is a broken spirit; a broken and contrite heart you, O God, will not despise” (v. 17).
Repentance is not reserved for isolated, demoralizing events or for when we blow up our lives. Repentance is a regular, lifelong practice. If we adopt this practice in our own lives, it softens us. As Martin Luther tells us in the first of his Ninety-Five Theses, Jesus “willed the entire life of believers to be one of repentance.” All of life is repentance.
