Family Resemblance: What Does Your Life Reveal?

There's something fascinating about family resemblance. Sometimes you don't have to ask who someone's parents are. You can see it immediately. The same eyes. The same smile. The same expressions. Sometimes you can even hear the resemblance in the way they talk. Children often look like their parents, sound like their parents, and sometimes even act like their parents. According to the Apostle John, something similar should be true of us spiritually.

As we've walked through 1 John, John has been answering one important question: What does genuine Christianity really look like? Last week, he reminded us of the foundation underneath it all: we are children of God. But if we really are God's children, shouldn't our lives begin to resemble our Father? That's the question John answers in 1 John 3:4–10.

Sin Reveals the Problem
Before John shows us what God's children look like, he reminds us of what we've been saved from. "Everyone who practices sin also practices lawlessness; and sin is lawlessness" (1 John 3:4).

We often think of sin as making a mistake or exercising poor judgment. But John goes deeper. Sin is rebellion against the authority of God. It's rejecting His rule, refusing His authority, and choosing our way over His.

Every temptation eventually asks the same question: Who will rule my life?
Every act of obedience says, "Your will be done."
Every act of sin says, "My will be done."

That's why sin is so serious. It isn't simply breaking a rule. It is rebelling against our King. But John doesn't leave us staring at our rebellion. He immediately points us to Jesus.
"You know that He appeared in order to take away sins, and in Him there is no sin" (1 John 3:5).

Jesus didn't simply come to give us a better example or teach us a better way to live. He came to deal with our greatest problem: our sin. At the cross, Jesus bore our guilt, removed our condemnation, and took away our sin. But He came to do more than forgive us. He came to break sin's grip on our lives.

The One who saves us from the penalty of sin is also transforming us from the power of sin.
That means the cross reminds us of both the seriousness of our sin and the greatness of God's grace. Whatever your past, whatever your failures, Jesus came to take away sin.
That is our hope.

The New Birth Changes Us
John then says that those who abide in Christ do not continue living in a pattern of comfortable, unrepentant sin. That doesn't mean Christians never sin. John has already made clear that believers still stumble. The difference is that believers can no longer make peace with sin. Why? Because they abide in Christ.

As we remain close to Jesus, His Spirit convicts us, His Word corrects us, and His grace transforms us. God's children may stumble into sin, but they cannot comfortably settle into it. That's evidence that something has changed. John says, "The one who practices righteousness is righteous, just as He is righteous" (1 John 3:7).

Notice what he doesn't say. He doesn't say that practicing righteousness makes us righteous. Righteous living is not the root of our salvation. It is the fruit of our salvation.
We don't obey God to earn a place in His family. We obey because we already belong to Him. The new birth doesn't make us perfect overnight. But it does make us different.
There are new desires. New convictions. A new direction.

So perhaps the better question isn't, "Have I ever sinned?"
The question is:
Is God continuing to change me?
Is there growing obedience? A deeper love for Christ? A greater willingness to repent?
The new birth always produces a new way of life.

Family Resemblance Reveals Family Relationship
John brings everything together in verse 10: "This is how we know who the children of God are and who the children of the devil are..." John isn't asking simply, "What do you say you believe?" He's asking: What does your life reveal?

There are two spiritual families, and the direction of our lives reveals which family we resemble. God's children increasingly resemble their Father. Those who persist in rebellion resemble another father. Everyone reflects someone. Every life reflects the influence of the one it follows.

But John gives us another mark of the family resemblance: love.

He says that anyone who does not love his brother and sister is not God's child. Why does John bring love into a passage about righteousness and sin? Because righteousness is never merely vertical. It always becomes horizontal. Those who love the Father increasingly love the Father's children.

Love isn't an optional characteristic of the Christian life. It's part of the family resemblance.

So the question isn't simply, "Am I becoming more moral?"
It's also:
Am I becoming more loving?
Is my life marked by patience, forgiveness, compassion, service, and a growing love for God's people?
Because the Father's love never stops with Him. It always flows through His children.

Does Your Life Look Like Your Father?
John's message is simple but challenging: Family resemblance reveals family relationship.

You don't become God's child by living righteously or loving others. Rather, righteous living and genuine love reveal that you have been born into God's family.

So let God's Word examine your heart.

Can others increasingly see the character of your heavenly Father in the way you live?

Is there any sin you've begun to tolerate instead of repent of?

Are you abiding in Christ, or trying to live the Christian life in your own strength?

Who can you intentionally love this week as a member of God's family?

If those questions reveal areas where you need to grow, don't leave discouraged. Leave encouraged.

The same Father who gave you new life is continuing to transform your life. Don't simply try harder to look like one of God's children. Walk more closely with your Father.

As you abide in Christ, His life will continue to transform yours. His character will become increasingly visible in you.

And over time, the family resemblance will become unmistakable.