1 John - Living Letters
✨ Summary
1 John 5:13 - purpose: so believers may know they have eternal life.
Big idea: our world sells technique-based certainty that never lasts; John gives real assurance by fixing us on Christ. He writes to give confidence, pull us out of worldliness, and call us to walk in light and love. God is light, love, and life.
1 John 1:1-4 - apostolic eyewitness: heard, seen, touched.
- Christianity has fingerprints. Faith rests on facts, not vibes.
- Outcome of their testimony: fellowship with God and one another; joy complete.
- Practice: read a Gospel aloud; ask the Spirit to make Jesus large; let history steady your heart.
1 John 1:5-2:2 - God is light; walking in light = honesty and holiness, not sinless swagger.
- Lie 1: "I have no sin" (self-deception; calls God a liar, 1:8,10).
- Lie 2: "I sinned, so I have no hope" (shame religion; self at centre).
- Remedy: confess and be cleansed (1:9). We have an Advocate with the Father, Jesus Christ the righteous; His propitiation fully satisfies justice (2:1-2). Assurance is judicial before it is emotional.
1 John 3:6-10 (cf. 5:18) - present-tense emphasis: no settled lifestyle of sin for those born of God. New birth produces new practice; Jesus protects and the evil one cannot touch the born-again.
- 2:19 - those who leave show they were not of us.
- Warning sign: ongoing, unrepentant sin without conviction.
- Comfort: if you hate your sin and repent, you are in the right place; Christ keeps you and the Spirit grows you over time.
1 John 4:7-21 - perfect love casts out fear.
- Love is defined by the cross (propitiation), not warm fuzzies (4:10).
- Perfect love drives out punitive fear; judged in Christ, so confidence for the Day (4:16-18).
- Illustration referenced: a high-profile assassination and global outrage; do not be surprised the world hates believers (3:13). Live from God's love, not outrage.
1 John 5:1-12 - God's testimony outranks our feelings.
- God's record: He has given us eternal life, and this life is in His Son. Whoever has the Son has life (5:11-12; 5:4-5).
- To reject this is to call God a liar (5:10). Assurance = taking God at His word, not reading your inner weather.
Mini-clinic (1 John 3:19-24):
- Repeat sin shame: run to the Advocate; forgiveness rests on Christ, not your streak (1:9; 2:1-2).
- "I don't feel saved": believe God's testimony over moods; preach 5:12 to yourself.
- Others deconstructed: abide in what you heard; the Anointing keeps you (2:24-27). Focus on Who stays.
Benediction (5:21): keep yourselves from idols, including the idol of constant self-measurement. Fix eyes on the Son. Live boldly and freely out of cross-secured assurance. Amen.
📝 Final Sermon Bullets
Readings - on Screen
13. I write these things to you who believe in the name of the Son of God, that you may know that you have eternal life.
Hook - Why Assurance Gets Fuzzy
- Our world sells technique-based certainty; it never sticks.
- We all crave assurance; John opens the windows and lets in fresh air.
- JOHN: Old - JC close friend - Ephesus 85-95AD - last eyewitness (martyred friends)
- John's goal in this "sermon-letter" is to give believers confidence in Christ, to pull them out of worldliness, and to encourage them to walk in the light and to walk in love
- In short, the God who is light, love, and life gives us assurance and a new way to live.
1 John 1:1-4 - Assurance Begins with What the Apostles Touched
- That which was from the beginning, which we have heard, which we have seen with our eyes, which we looked upon and have touched with our hands, concerning the word of life -
- the life was made manifest, and we have seen it, and testify to it and proclaim to you the eternal life, which was with the Father and was made manifest to us -
- "We handled Him." - Christianity isn't a fog of ideas or feelings; it has fingerprints.
- Piled up verbs = The real blood of a real Saviour really saves.
Result:
3. that which we have seen and heard we proclaim also to you, so that you too may have fellowship with us; and indeed our fellowship is with the Father and with his Son Jesus Christ.
4. And we are writing these things so that our joy may be complete.
- Result: fellowship with God and His people; joy completed.
- Kill vibe-based faith - If faith = mood then assurance = fragile
- Floaty faith leads to flimsy assurance. (Conf - YCamps = chasing vibes)
- John says no: our faith rests on facts - God did enter history in Christ (grounded in history not butterflies in belly (goosebumps))
- Practice: read a Gospel aloud; ask the Spirit to make Jesus large; let history steady your heart.
1 John 1:5-2:2 - Walking in the Light with Our Advocate
5. This is the message we have heard from him and proclaim to you, that God is light (pure, revealing, unchanging holiness), and in him is no darkness at all (can't play games+hide).
6. If we say we have fellowship with him while we walk in darkness, we lie and do not practice the truth.
7. But if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin.
- not sinless perfection = honesty & holiness. Living openly before God, with nothing hidden.
- It's not sinless swagger; it's humble, confessed dependence.
Two opposite lies will kill your assurance:
- Lie #1: "I have no sin." - counterfeit confidence = false assurance based on our supposed goodness.
- It's like trying to disinfect a wound by pretending it's not there.
- How often do we hear of people who think they're above sin. Yes, we're saved, set free from the power and consequence of sin, but there's still a battle.
- If we claim we're just fine and minimise our sin, John says we're self-deceived and calling God a liar (1:8, 1:10).
8. If we say we have no sin, we deceive ourselves, and the truth is not in us.
Lie #2: "I sinned, so I have no hope."
- This is the despair that says, "I blew it, so I must not be a real Christian."
- This is making your faith into a shame religion, and it's just as toxic.
- It puts you at the center, as if your failures are greater than Christ's grace.
The gospel remedies both lies:
9. If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness.
10. If we say we have not sinned, we make him a liar, and his word is not in us.
- My little children, I am writing these things to you so that you may not sin. But if anyone does sin, we have an advocate with the Father, Jesus Christ the righteous.
- He is the propitiation for our sins, and not for ours only but also for the sins of the whole world.
- John is writing to prevent sin, but knowing we will stumble, he reminds us we have an Advocate when we do (2:1).
- Advocate = "parakletos" = legal helper or defense.
- Picture a courtroom: the charge is true, the evidence is real.
- Then "Jesus Christ the righteous" steps forward, not to minimise your sin but to present His own blood.
- Propitiation means that His sacrifice fully satisfied God's justice.
- The Judge's hammer falls: paid in full.
- That's why confession = not grovelling for mercy you might earn tomorrow; it's stepping into mercy already secured.
- Assurance is judicial before it is emotional. As in, you have an advocate regardless of how you feel.
This kills both performance (good enough) and shame (too bad). Both put self at center - kill both = assurance in Jesus
This is why honest confession should be a regular, normal part of your walk with God.
- "Jesus Christ, Son of God, have mercy on me, a sinner" - not negotiating with God = resting in Advocate
- Primary purpose of John = assurance at salvation = not under sin, under Christ. (saved + kept + remove sin)
1 John 3:6-10 - Abiding in Christ Stops Sin
6. No one who abides in him keeps on sinning; no one who keeps on sinning has either seen him or known him.
7. Little children, let no one deceive you. Whoever practices righteousness is righteous, as he is righteous.
8. Whoever makes a practice of sinning is of the devil, for the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the works of the devil.
9. No one born of God makes a practice of sinning, for God's seed abides in him; and he cannot keep on sinning, because he has been born of God.
10. By this it is evident who are the children of God, and who are the children of the devil: whoever does not practice righteousness is not of God, nor is the one who does not love his brother.
- Family resemblance. No middle ground - no such thing as a sinful Christian (no sin = deceived?)
- Greek - Sin (hamartanei) = present tense (continuous)
- Commentator - the difference is between occasional acts of sin (which we lament and confess) and a "settled, continued lifestyle of sin", which is incompatible with truly knowing Christ
- John = "No one born of God keeps on sinning as a way of life."
- Paul (Romans) = we are no longer slaves to sin.
- Peter = we have been born again, you have a new nature.
18. We know that everyone who has been born of God does not keep on sinning, but he who was born of God (Jesus Christ) protects him, and the evil one does not touch him.
- Faith in Jesus Christ = you became His charge. He protects/sustains/empowers to fight sin
John knows the struggle = "Am I saved? Can I lose that salvation? What if I sin?"
- Hebrews 6 = there are those who've tasted the gift of Heaven but fallen away.
- Hebrews 10 = some have continued to deliberately sin after hearing the truth.
- Fear of "I know Jesus has saved me but I need to keep myself saved"
- John = "No one truly born of God continues to deliberately sin"
In fact, he helps understand this problem of people falling away
19. They went out from us, but they were not of us; for if they had been of us, they would have continued with us. But they went out, that it might become plain that they all are not of us.
- The implication = "yeah there are those who've had a tasted of God's goodness, they've heard the truth… But they never truly placed their faith in Christ"
- And remember John's first point. Having faith in Christ is not a feeling, it's not by my work, it's by His.
John = black/white language to shake up complacent Christians. "Are you still deliberately sinning? You need Jesus Christ"
- John writes this to bring assurance to Christians BUT still = fear of "well, I still struggle with sin, does that mean I'm not saved?"
- Let me make this incredibly clear. John would say:
- Sin without repentance or conviction is a sign that you are not saved.
- If continually sin (on purpose) = don't feel convicted/ashamed/repentant = sign to turn to Jesus.
- If Christian asking "I keep sinning and I hate it, I know it's wrong" - you are in the right place.
- Tension John is writing "don't think you have no sin, but also, the Holy Spirit will over time help you to sin less"
- In the meantime, don't worry about your status of salvation, because that's not yours to worry about.
- You are born of God and Christ maintains that status for you. His sacrifice was sufficient.
1 John 4:7-21 - Perfect Love Casts Out Fear
10….this is love, not that we have loved God but that he loved us and sent his Son to be the propitiation for our sins.
John then expand on what a Christian's faith looks like. Which is LOVE.
16. So we have come to know and to believe the love that God has for us. God is love, and whoever abides in love abides in God, and God abides in him.
17. By this is love perfected with us, so that we may have confidence for the day of judgment, because as he is so also are we in this world.
18. There is no fear in love, but perfect love casts out fear. For fear has to do with punishment, and whoever fears has not been perfected in love.
- Love is not warm fuzzy feeling (it's propitiation). The cross = ultimate display of God's love.
- The cross is where we see light and love meet: God's holiness and love both satisfied in Christ's sacrifice
- God's love isn't mushy or permissive; it's perfect and sacrificial. < THIS drives out fear
What fear? "punishment" (God's judgment) - if God punish me = terror BUT propitiation = confidence
- Perfect love casts out punitive fear. When you know God as Father, you don't fear Him as my Judge anymore. (Jesus judged in my place)
Last week the world was rocked by Charlie Kirk's assassination.
- It's sparked fear, outrage, despair.
13. Do not be surprised, brothers, that the world hates you.
- Do not be surprised when the dark hates the light.
- Do not be surprised when those who are anti-christ, those who deny Christ, persecute the church.
- This is what sin looks like when it matures: hatred of the light.
- But perfect love drives out fear (4:18). We do not live on outrage; we live on the cross-secured love of God.
John has seen it all, he's seen all of his friends martyred, yet he writes this.
- Today more than ever we need a love that casts out fear.
- Today more than ever the world needs Christians who live in the light of God and reflect His love.
- Our hope is not political calm but the risen Christ who overcame the world (5:4-5, 11-12).
1 John 5:1-12 - God's Testimony Trumps Our Feelings
11. And this is the testimony, that God gave us eternal life, and this life is in his Son.
12. Whoever has the Son has life; whoever does not have the Son of God does not have life.
- Faith in Jesus, the true Jesus, is evidence of your new birth. That faith = overcomes
4. For everyone who has been born of God overcomes the world. And this is the victory that has overcome the world - our faith.
5. Who is it that overcomes the world except the one who believes that Jesus is the Son of God?
- Courtroom: "testimony"/"witness" = 10 times in verses 6-12.
- It's as if John is saying, "Let's settle this once and for all - here's the evidence, here's the record from God."
- God has given testimony about His Son. Specifically, God declares that eternal life is found in Jesus. "Whoever has the Son has life." Period.
This means your assurance rests on what God says, not what you feel.
- Imagine your emotions as internal weather - cloudy one day, sunny the next.
- Many of us assess our spiritual state by that ever-changing inner weather.
- One day, you feel saved; the next day, you don't.
- John says to take a step back: God's testimony is greater than our heart's moods.
- So, what has God said?
- At the baptism of Christ He declared "This is my Son"
- At the cross of Christ atonement for our sins was accomplished
- And since then the Holy Spirit continues to testify in our hearts to Christ.
- All these agree: Jesus is the Son and Saviour.
If God's testimony says you have life in His Son, why let your fickle feelings argue otherwise? John gets almost blunt:
10. Whoever believes in the Son of God has the testimony in himself. Whoever does not believe God has made him a liar, because he has not believed in the testimony that God has borne concerning his Son.
- In other words, to doubt that eternal life is secure in Christ is to doubt God's own word.
- Assurance ultimately comes down to taking God at His word.
- It's about what God says about His Son, not what your mood says about you.
We need to kill the habit of self-testimony as your foundation.
- "self-testimony" = basing your confidence on what you say about yourself - your track record/subjective feelings.
- Our testimony = up and down. God's testimony = rock solid & unchanging.
- Who does the better job of running the universe - your feelings or God's word?
- Whose testimony carries the case? The Father has testified, "This is my Son. I have given you life in Him." Let that verdict have the final say.
Mini-Clinic - When Your Heart Condemns You (1 John 3:19-24)
Even with all this truth, sometimes our feelings still condemn us. John knew that:
19. By this we shall know that we are of the truth and reassure our heart before him;
20. for whenever our heart condemns us, God is greater than our heart, and he knows everything.
Let's do a quick "clinic" on common assurance struggles, and apply John's medicine:
Symptom 1: "I've confessed the same sin again. I feel like I must not be a real Christian if I keep struggling."
- Prescription: 1 John 1:9 and 2:1-2.
- Your forgiveness isn't earned by never stumbling; it's secured by Jesus' advocacy and atonement. Confession is not hitting the reset button to "try harder" in your own strength; it's running back to the Advocate who already paid for that sin.
Symptom 2: "I don't feel saved today. Yesterday I was on a spiritual high; today I'm low and full of doubt."
- Prescription: 1 John 5:9-12.
- Do what John says: believe God's testimony over your transient feelings.
- Preach 5:12 to yourself: "I have the Son, so I have life - because God says so."
Symptom 3: "Respected Christians I know have deconstructed or left the faith. It's really shaking me. If they fell away, how do I know I won't?"
- Prescription: 1 John 2:24-27.
- John would say: don't let someone's going out cause you to panic; instead, cling tighter to the truth you have.
- He's got you. So instead of focusing on who left, focus on Who stays - Jesus, the same yesterday, today, and forever, and His Spirit who abides in you.
BENEDICTION
John ends his letter with a final fatherly warning:
21. Little children, keep yourselves from idols.
- including the idol of constantly measuring yourself.
- Don't fix your eyes on you; fix them on the Son.
- Keep yourselves from the idol of self-doubt and self-focus by keeping yourselves in the love of God.
- You have eternal life because of Jesus Christ. Let's live boldly and freely out of that confidence. Amen.