1 John 4:13–18 So That We May Have Confidence for the Day of Judgment

1 John 4:13–18 So That We May Have Confidence for the Day of Judgment

Introduction

It is absolutely paramount that our faith is built on sound doctrine, the truth about God and the truth about all things. Why? Because what we believe never stays contained. It carries implications, and those implications set off domino effects in our lives. In the story of salvation, those who belong to God are meant to live with confidence before Him as His people, not wavering, not confused, not unsure. Not a loud confidence in ourselves, but a settled confidence produced by the work of God. The work of Christ is not flimsy or lacking. And what it produces in a man or woman who truly believes should match that reality.

In 1 John 4:13–18, John teaches that believers can know they abide in God because God has given His Spirit. This abiding shows itself in love, and that love grows into confidence for the day of judgment. John also draws a clear line that must not be blurred. Fear is tied to punishment. Perfect love casts out that fear. That is comfort for the believer, and it is also a warning to anyone who would try to borrow assurance while remaining outside of Christ.

The Spirit of God Lives in His Children, Now

John begins with assurance that is meant to be known, not guessed at. “By this we know that we abide in him and he in us, because he has given us of his Spirit” (1 John 4:13). Confidence begins with God’s action, not ours. We do not work ourselves into abiding. We do not earn the Spirit. We receive Him because God gives Him.

John ties this gift of the Spirit to the public, historical message of the gospel. The apostles “have seen and testify” that the Father sent the Son to be the Savior of the world (1 John 4:14). This is not hidden knowledge reserved for a select few. It is truth that is proclaimed. Whoever confesses that Jesus is the Son of God, God abides in him, and he in God (1 John 4:15). This confession is not a casual slogan. It is a Spirit produced agreement with what God has revealed about His Son.

So where does our confidence come from that we abide in God, and that we are counted as His? It comes from a direct truth. God has placed His Spirit within us. We are His because He has redeemed us. We are His because He has sealed us for the day of redemption (Ephesians 4:30). He is making us into His temple, a place where He truly dwells.

With that belief comes something else. We begin to understand how it is even possible for a holy God to give His Holy Spirit to sinners. It is possible because Jesus was sent from the Father to save sinners. God does not overlook evil. God does not pretend sin does not matter. Jesus was sent as Savior because sinners needed saving.

This confidence is not man centered reasoning that we arrive at by effort or intelligence. It is the byproduct of being born again, born from above, the circumcision of the heart, not done by the hands of man, but by the hand of the Spirit. The person whose faith rests on the works of God through the person of Christ should be confident and unmoved in the One they trust. Your status is not uncertain. You are an adopted child of God. You inherit what Christ accomplished and obtained, because you are united to Him. What sin destroyed has been restored. Those who believe are brought back to their Creator.

John’s teaching about the Spirit also matches what Jesus taught. The Spirit bears witness to Christ. Jesus promised that the Helper would come from the Father, the Spirit of truth, and He would bear witness about Jesus, and Christ’s people would bear witness too (John 15:26–27). Jesus also told His disciples it was to their advantage that He go away, because if He went, He would send the Helper to them (John 16:5–7). And when the Spirit was poured out in Acts, Peter explained it as fulfillment of God’s promise, poured out in the last days, not as secret spirituality (Acts 2:14–18).

Because of this, we are not left alone. God is actively present among His people by the Spirit He has given. The Holy Spirit is not a mysterious force cultivated in darkness, or obtained by a select few through hidden knowledge. He has been poured out on those who believe that Jesus was sent by the Father to be the Savior of the world, and that He saved by being crucified for sins. At the cross, God justifies the guilty. He declares righteous those who deserve wrath because we could not meet His standard by our own effort.

And with the Spirit comes knowledge. God has made Himself known in Christ. We walk with Him as we learn to listen, to obey, and to follow His leading through what He has placed within our hearts. We have been made fully His through a real purchase, a true redemption. If anything, we were not the driving force in that transaction. At best we were inactive bystanders while mercy moved toward us.

So the question is not whether God can be present with His people. The question is how a holy God could do this for sinners at all. And the answer is that it was never a last minute idea, never a contingency plan. Redemption by purchase was always the way. Hosea’s life became a picture of the Lord’s faithful love toward unfaithful people. Hosea bought back the woman who had been unfaithful, and then called her to dwell as his (Hosea 3:1–5). That picture points forward to the greater reality, God redeems His people at a cost. Christ entered once for all into the holy places by means of His own blood, securing an eternal redemption (Hebrews 9:12). Jesus also suffered outside the gate in order to sanctify the people through His own blood (Hebrews 13:12). Sins have been removed through Christ crucified. He has cleared every obstacle, satisfied every requirement, and opened the way for God to freely give His Spirit to those who believe.

We Do Not Fear the Return of Christ

John now shows what this abiding produces. “By this is love perfected with us, so that we may have confidence for the day of judgment” (1 John 4:17). The day of judgment is real. John does not erase it. He teaches believers how to face it with confidence, because love has come to maturity in them.

John explains why this confidence is possible. “Because as he is so also are we in this world” (1 John 4:17). The believer’s life begins to resemble Christ. Not in sinless perfection, but in real direction and real fruit. When the Spirit produces God’s character in us, things like patience, long suffering, and forgiveness toward those who sin against us, it should strengthen our assurance. Those traits are not natural to our fallen instincts. They run against what once felt wise and authoritative in our own eyes. When we see those desires and actions taking root, we are seeing evidence of a life and a power that is not our own.

John then states the principle plainly. “There is no fear in love, but perfect love casts out fear” (1 John 4:18). Then he defines the kind of fear he is talking about. “For fear has to do with punishment” (1 John 4:18). This is the boundary line that must remain clear. The fear that love casts out is the fear of punishment. It is the fear of condemnation.

For those who are in Christ, condemnation is removed. “There is therefore now no condemnation for those who are in Christ Jesus” (Romans 8:1). God has done what the law could not do by sending His Son, condemning sin in the flesh, and fulfilling His righteous requirement in those who walk according to the Spirit (Romans 8:1–4). This means the believer’s confidence is not built on pretending judgment is not coming. It is built on the truth that punishment has already been dealt with in Christ.

This also changes how we think about fearing God. We do not fear Him out of ignorance, as if God is somehow wrong to hold us accountable. We also do not comfort ourselves with the lie that God is indifferent to evil. The Spirit Himself convicts the world concerning sin, righteousness, and judgment, showing that God takes evil seriously and will judge it (John 16:8–11). But for the believer, fear is quieted because we have come to know what God has done. He has adopted us as His children, and the tangible expression of that adoption is that we begin to resemble Him. The Spirit within us produces fruit, and that fruit is not meant to make us proud, it is meant to assure us that we belong to Him.

This is where the severity matters. To get this wrong, or to mislead someone, carries weight that is hard to put into words. The punishment of sin is the final result on the day of judgment for anyone not found in Christ. Christ will return as Judge. Jesus taught that when the Son of Man comes in His glory, He will gather the nations and separate people like a shepherd separates sheep from goats (Matthew 25:31–32). The apostles also testified that Jesus is the one appointed by God to judge the living and the dead (Acts 10:42–43). That same passage also makes the offer clear, everyone who believes in Him receives forgiveness of sins through His name (Acts 10:42–43). That is both promise and warning. Forgiveness is offered to all who believe. Judgment remains for those who refuse Him.

So to cultivate false confidence in someone who rejects Jesus is exactly what Christ warned about, the blind leading the blind. But there is another danger too. To claim belief in Jesus while living with no confidence that you truly belong to Him does not heal the soul. It leaves a person unstable, fearful, and confused. In different ways, both groups miss the same thing, the love of God revealed in Christ crucified.

And we cannot forget the larger frame we are standing in. We live in the last days the prophets spoke about. The final event still ahead is the last day, the day of the Lord, judgment day, the return of Christ. Human history is not open ended. Time will not simply continue the way we are used to thinking about it. God has appointed a day when Christ will return. God has appointed a day when the kingdom of heaven will fully replace the kingdom of man, and all things will be made new in a new heaven and a new earth. That is why the gospel is also prophetic. It does not only speak to what Christ has done, it declares what He will do. That future day has not arrived yet, but it cannot be delayed, resisted, or hindered in any way.

Even Revelation connects testimony about Jesus to a prophetic focus. John is told that those invited to the marriage supper of the Lamb are blessed, and that these are the true words of God (Revelation 19:9–10). The angel also says that the testimony of Jesus is the spirit of prophecy (Revelation 19:9–10). True gospel witness does not end with the cross. It includes the promised return of Christ, the final judgment, and the final salvation of God’s people.

Conclusion

The Spirit of God has been given to those who believe in Jesus. God is actively present among His people, and He is not leaving His children to guess where they stand. As God has expressed Himself in Christ, loving, so should we be because of His Spirit. And because punishment has been dealt with at the cross, believers have confidence that the day of the Lord is not a day of condemnation for them. It is the final revealing of deliverance, the day when Christ completes what He began, and the day when His people stand before Him without fear.

Scripture References

John 15:26–27 - The Spirit of truth bears witness about Christ, and Christ’s people bear witness as well.

John 16:5–7 - Jesus teaches that His departure leads to the coming of the Helper, showing the Spirit’s coming is planned and purposeful.

Acts 2:14–18 - The Spirit is poured out publicly as God promised for the last days, not hidden knowledge.

Hosea 3:1–5 - Hosea’s purchase and restoration picture costly love that points toward redemption.

Hebrews 9:12 - Christ secures eternal redemption by His own blood, once for all.

Hebrews 13:12 - Jesus sanctifies His people through His blood, suffering outside the gate.

Ephesians 4:30 - Believers are sealed by the Holy Spirit for the day of redemption.

John 16:8–11 - The Spirit convicts the world of sin, righteousness, and judgment, showing God takes evil seriously.

Romans 8:1–4 - No condemnation for those in Christ, because God condemned sin in Christ and fulfills righteousness in His people.

Matthew 25:31–32 - Christ returns in glory and separates people, confirming final judgment.

Acts 10:42–43 - Jesus is appointed Judge, and forgiveness is promised to everyone who believes in Him.

Revelation 19:9–10 - The marriage supper of the Lamb is sure, and the testimony of Jesus carries prophetic certainty.

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