A reflection on Matthew 5:27-30 and the heart behind our desires
“You have heard that it was said, ‘You shall not commit adultery’; but I say to you that everyone who looks at a woman to lust for her has already committed adultery with her in his heart.”
Jesus didn’t mess around when it came to difficult topics. While the religious leaders of his day were busy creating loopholes and technicalities, Jesus went straight for the heart. And when it comes to sexual purity, he pulled no punches.
This isn’t a comfortable conversation. It’s part of what I call the “Uncomfortable Trinity” – male/female roles, finances, and sexuality. These are the topics we’d rather skip over, the ones that make us squirm in our seats and suddenly find our phones very interesting. But here’s the thing: Jesus didn’t skip them, and neither should we.
The Loophole Culture
Picture the scene Jesus was addressing. The religious crowd had turned “don’t commit adultery” into a technicality game. As long as you didn’t physically cross certain lines, you were golden. Sound familiar?
“I didn’t do anything – I just looked.”
“It’s not like I acted on it.”
“Looking never hurt anybody.”
“At least I’m not cheating on my spouse.”
We’ve become masters at drawing lines just close enough to sin to get a thrill, but just far enough away to maintain plausible deniability. We’ve turned purity into a game of “how close can I get to the fire without getting burned?”
But Jesus wasn’t interested in our creative interpretations. He went straight to the source: the heart.
The Jews of Jesus’ time weren’t much different from us. Men could divorce their wives for burning dinner or nagging too much. The culture was hypersexualized – temple prostitutes, graphic public art, and a double standard that celebrated male promiscuity while demanding female virtue. Yet even in that environment, they found ways to justify their behavior and feel righteous about it.
We do the same thing. “Sure, our culture is sexualized, but it’s not as bad as [insert historical period here].” We point to worse examples to make ourselves feel better about our own compromises.
Why God Takes This So Seriously
Here’s what we need to understand: This isn’t just about behavior modification or keeping your hands to yourself. God’s concern with sexual purity goes much deeper than that.
First, lust is objectification at its core. When we look at someone with lustful intent, we stop seeing them as a person made in God’s image and start seeing them as a product designed to satisfy our desires. We reduce human beings – people with souls, dreams, families, and infinite worth – into objects for our consumption.
Second, God uses marriage as a picture of Christ and the church. When Paul writes about marriage in Ephesians 5, he’s not just giving relationship advice. He’s revealing something profound about God’s relationship with his people. If we want to take seriously what God takes seriously, marriage and sexuality top that list.
Third, sexual sin affects us differently than other sins. Paul makes this clear: “Flee from sexual immorality. Every sin that a man does is outside the body, but he who commits sexual immorality sins against his own body.” There’s something uniquely damaging about sexual sin – it affects us at levels we don’t fully understand.
The Real Consequences
We live in a world that treats lust like a common cold – something everybody gets, no big deal, just take some medicine and move on. But Jesus treats it like a cancerous tumor requiring radical surgery.
Look at what unchecked lust produces:
Broken marriages. When we feed our minds with images and fantasies of people who aren’t our spouses, we create unrealistic expectations. Hollywood has trained men to expect women to be hypersexual fantasies and women to expect men to be poetry-writing romantic ideals. When reality doesn’t match the fantasy, we grow bitter and eventually abandon our commitments in pursuit of “happiness.”
Emotional adultery. You don’t have to be physically unfaithful to betray your spouse. When you connect emotionally with someone of the opposite sex in ways that should be reserved for your marriage, you’re essentially having an affair of the heart. You confide in them, seek their approval, and gradually alienate your spouse from that part of your life.
Addiction and escalation. What starts as “harmless looking” rarely stays there. The pornography industry – a multi-billion dollar business that has infiltrated every area of life, including the church – knows this. They know that what satisfies today won’t satisfy tomorrow. The average age of first exposure to pornography is now 12 years old. We’re raising a generation of children whose understanding of sexuality has been shaped by an industry that profits from their addiction.
Spiritual deadness. Sin always promises more than it delivers and costs more than we expect. Unchecked lust creates a barrier between us and God that grows thicker over time. We lose our sensitivity to the Holy Spirit, our prayers become hollow, and our worship becomes performance.
The Radical Solution
Jesus’ solution sounds extreme: “If your right eye causes you to stumble, tear it out and throw it away. If your right hand causes you to stumble, cut it off and throw it away.”
This isn’t literal, but it’s not gentle either. Jesus is calling for violent, uncompromising war against sin. He’s asking: “What are you willing to lose to gain your purity? Your smartphone? Your social media? That relationship? That job? That habit?”
Here’s what this looks like practically:
1. Get Brutally Honest
Stop calling sin by cute names. The Bible doesn’t talk about “having an affair” or “moral failures” – it calls it sin, rebellion, and transgression against God’s law.
Confession means saying about your sin exactly what God says about your sin. When you mess up, don’t pray vague prayers about “struggles.” Get specific: “Lord, I was lustful today. I objectified that person. I fed my sinful desires. I rebelled against you.”
2. Cut Whatever Needs to Be Cut
This is where it gets costly. Maybe it’s ending a friendship that’s become emotionally inappropriate. Maybe it’s changing jobs because your work environment fuels temptation. Maybe it’s getting rid of your smartphone or social media.
These sound extreme, but they show just how important this issue is to God. We don’t negotiate with sin. The devil would love to make a treaty, but in this war, there can be no compromise.
3. Be Unapologetic About Your Standards
Remember Joseph fleeing from Potiphar’s wife? He could have made excuses: “She’s my boss’s wife – I might offend her.” “This could hurt my career.” “Nobody will ever know.” Instead, he ran.
Be willing to be called hypersensitive, legalistic, prudish, or old-fashioned. Your ultimate audience isn’t your friends or your culture – it’s the God who died for you, whose blood bought you, who forgave and washed you.
4. Live in Victory, Not Defeat
Too often, lust is discussed like a terminal illness – “just a cross to bear” or “you’re going to struggle with this your whole life.” This ought not to be.
Jesus said, “If the Son makes you free, you will be free indeed.” You’re not a slave to your passions. You’re not an animal following uncontrollable instincts. You’ve been set free, and you can walk in that freedom.
The Heart of the Matter
Here’s what this all comes down to: God created sexuality as a gift to be enjoyed within the covenant of marriage. It’s supposed to be worship, celebration, and joy between a husband and wife. When we take this gift and twist it into selfishness, fantasy, and objectification, we’re not just breaking rules – we’re breaking God’s heart.
Your spouse should be the object of your desire and your standard of beauty. Within marriage, sexual desire isn’t lust – it’s worship. God wants you to enjoy this gift fully and without shame.
But outside of marriage? Jesus is calling you to radical purity. Not because he wants to rob you of joy, but because he wants to protect the joy he has in store for you.
The question isn’t “How close can I get to the line?” The question is “How can I honor God with my heart, my eyes, and my desires?”
Because at the end of the day, this isn’t really about sex at all. It’s about lordship. It’s about whether Jesus is truly Lord of every area of your life, including the areas you’d rather keep private.
He sees your heart anyway. The question is: what is he finding there?
What needs to be “cut off” in your life for the sake of purity? Remember, Jesus isn’t asking you to sacrifice joy – he’s asking you to sacrifice counterfeits so you can experience the real thing. The cost of obedience is always less than the cost of compromise.