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.

1 John 1:5-2:2 - God is light; walking in light = honesty and holiness, not sinless swagger.

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.

1 John 4:7-21 - perfect love casts out fear.

1 John 5:1-12 - God's testimony outranks our feelings.

Mini-clinic (1 John 3:19-24):

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

1 John 1:1-4 - Assurance Begins with What the Apostles Touched

  1. 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 -
  2. 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 -

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.

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.

Two opposite lies will kill your assurance:

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."

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.

  1. 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.
  2. He is the propitiation for our sins, and not for ours only but also for the sins of the whole world.

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.

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.

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.

John knows the struggle = "Am I saved? Can I lose that salvation? What if I 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.

John = black/white language to shake up complacent Christians. "Are you still deliberately sinning? You need Jesus Christ"

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.

What fear? "punishment" (God's judgment) - if God punish me = terror BUT propitiation = confidence

Last week the world was rocked by Charlie Kirk's assassination.

13. Do not be surprised, brothers, that the world hates you.

John has seen it all, he's seen all of his friends martyred, yet he writes this.

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.

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?

This means your assurance rests on what God says, not what you feel.

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.

We need to kill the habit of self-testimony as your foundation.

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."

Symptom 2: "I don't feel saved today. Yesterday I was on a spiritual high; today I'm low and full of doubt."

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?"

BENEDICTION

John ends his letter with a final fatherly warning:

21. Little children, keep yourselves from idols.