The Evidence of an Authentic Relationship

Main Idea of 1 John (The Central Thesis): 

1 John is a pastoral letter written to provide believers with absolute assurance of their salvation and fellowship with God. It serves as a definitive guide to distinguishing truth from error by applying the “tests” of sound doctrine, righteous living, and sacrificial love, all rooted in the historical reality of Jesus Christ.

The Logical Bridge (The Contextual Link): 

In the previous verses (2:1-2), John provided the ultimate comfort: when we sin, we have an Advocate, Jesus Christ the Righteous. However, John is careful to ensure that grace is never confused with lawlessness. In verses 3-6, he provides the first “test” of assurance. He moves from the provision for sin to the proof of salvation. If we truly “know” the Advocate, our lives will begin to reflect His character.

The Text: Knowing and Walking 

“This is how we know that we know him: if we keep his commands. The one who says, “I have come to know him,” and yet doesn’t keep his commands, is a liar, and the truth is not in him. But whoever keeps his word, truly in him the love of God is made complete. This is how we know we are in him: The one who says he remains in him should walk just as he walked.”

– 1 John 2:3-6 (CSB)

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Observations (What the Text Says)

The Goal of Assurance (v. 3): John provides a specific metric: “This is how we know that we know him.”

The Requirement (v. 3b): Knowing Him is inextricably linked to “keeping his commands.”

The Confrontation of Falsehood (v. 4): John calls out the hypocrisy of claiming a relationship without obedience, calling such a person a “liar.”

The Result of Obedience (v. 5): Keeping His word leads to the “love of God being made complete” (perfected).

The Standard of Conduct (v. 6): The ultimate measure of “remaining in Him” is to “walk just as he walked.”

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Interpretation: The Tangible Truth (Understanding the Meaning)

Knowing vs. Knowing About (v. 3-4) In the Greek mind, “knowledge” was often intellectual. But for John, “knowing” God is relational and experiential. As John Stott notes, you cannot claim to know a Holy God and remain indifferent to His commands. Obedience is not the cause of knowing Him; it is the evidence of it.

The Love Made Complete (v. 5) When we obey God’s word, His love reaches its intended goal or “perfection” in us. It isn’t that we become sinlessly perfect, but that God’s love isn’t just a theory anymore—it becomes a lived reality. Thomas Schreiner explains that this “completeness” shows that the Gospel has truly taken root in the believer’s heart.

The Walk of Christ (v. 6) The term “walk” refers to one’s entire lifestyle. John sets the bar at the highest possible level: Jesus Christ Himself. To “remain in Him” is to live a life characterized by the same dependence on the Father and the same sacrificial love that Jesus displayed. We don’t just follow His rules; we follow His footsteps.

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Application (How We Respond)

Check Your Fruit, Not Just Your Feelings: Assurance of salvation isn’t based on a “feeling” you had years ago; it is supported by a present-day desire to obey God. If you have no desire to keep His commands, you must ask if you truly know Him.

Integrity over Image: It is easy to “say” we know Him (v. 4). It is much harder to “keep” His word. We must move past religious talk and into active obedience.

Study the “Walk”: You cannot walk as He walked if you do not know how He walked. This requires a deep, constant immersion in the Gospels to see how Jesus treated the poor, how He prayed, and how He submitted to the Father.

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Connection to the Main Idea

This text provides the basis for assurance. While our salvation is based on Christ’s work (2:1-2), our assurance of that salvation is fostered by our fruit. Righteous living is the “test” that confirms we are truly in fellowship with a Holy God.

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How Does This Text Point to Christ?

Jesus is the Perfect Obeyer. He is the only one who kept the Father’s commands perfectly, and He is the “Pattern” for our lives. He doesn’t just give us a map; He is the way. We walk in His strength, empowered by the Spirit to imitate the One who first loved us.

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Summary (Recap)

1 John 2:3-6 teaches us that a true relationship with God is always accompanied by a lifestyle of obedience. To claim to know Christ while ignoring His commands is a contradiction. True assurance is found when we see the love of God transforming our walk to look more like the walk of Jesus.

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Be Intentional (Putting it to Practice)

For Spiritual Health: Identify one specific “command” of Christ you have been neglecting (e.g., forgiving an enemy, being anxious for nothing, loving your neighbor). Commit to obeying it this week as an act of fellowship.

For Outreach: Let your “walk” be a living sermon. Live with such integrity that people ask you why you live the way you do, presenting more opportunities to point to them to Christ.

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Ask Yourself (Personal Examination)

If a stranger looked only at my “walk” (lifestyle) this past week, would they conclude that I know Jesus?

Is there a “command” in my life that I am treating as “optional”?

Does my obedience flow from a heart of love for God, or a fearful desire to “check a box”?

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Bibliography (For Further Study)

Carson, D. A. (Editor). NIV Biblical Theology Study Bible. Zondervan.

Merida, Tony. Exalting Jesus in 1, 2, 3 John (Christ-Centered Exposition Commentary).

Schreiner, Thomas R. Magnifying God in Christ: A Summary of New Testament Theology.

Stott, John R.W. The Letters of John (Tyndale New Testament Commentaries).

White, A. Blake. Abide in Him: A Theological Interpretation of John’s First Letter.