1 John 5:10-12 Whoever Does Not Believe God Has Made Him a Liar (Resurrection Sunday 2k26)

1 John 5:10-12 Whoever Does Not Believe God Has Made Him a Liar

Introduction

As John moves toward the end of his letter, he brings the matter into sharp focus. He has not written to leave people guessing. He has not written to stir up vague religious feelings. He has written so that people may know whether they truly have life. That confidence is not grounded in personal effort, moral performance, or the ability to talk about spiritual things. It is grounded in the work and testimony of God Himself.

That is what gives this passage so much weight. John is not merely asking whether someone respects Jesus, admires His teaching, or is open to spiritual ideas. He is pressing a more serious question. Do we believe what God has said concerning His Son? Do we receive God’s testimony, or do we reject it? That is the issue standing before every reader in this text.

The language John uses is strong because the matter is serious. Eternal life is not found by building a case for ourselves. It is not found by pretending sin is less severe than it is. It is not found by trying to invent a version of God that fits our preferences. Eternal life is found in the Son of God, and God Himself has testified concerning Him. That means belief is not a leap into the dark. It is a response to divine witness.

This also means unbelief is not as harmless as people often imagine. John does not treat rejection of Christ as a small disagreement or a minor theological difference. He says it is a rejection of the testimony God has given. The issue is not simply what we think of Jesus. The issue is whether we believe God.

Do You Think God Is A Liar?

John says, “Whoever believes in the Son of God has the testimony in himself” (1 John 5:10). The believer is not left with an empty religious slogan. He is not living off imagination or inherited language alone. He rests upon what God has said and done concerning Christ. The testimony is God’s. The certainty is God’s. The truth is God’s. The believer receives that testimony and stands within it.

This matters because John has already shown that God has testified through the water, the blood, and the Spirit (1 John 5:6-8). In other words, the identity and saving work of Jesus Christ have not been left uncertain. God has borne witness that His Son is the One who truly came, truly shed His blood, and truly gives the Spirit. John is not presenting an isolated idea here. He is bringing his whole argument to a point. God has spoken concerning His Son, and eternal life is found in Him alone.

That is why the next statement lands with such force. “Whoever does not believe God has made him a liar” (1 John 5:10). John does not soften the issue. He does not say the unbeliever merely needs more time, more reflection, or more evidence in some abstract sense. He says that to reject God’s testimony concerning His Son is to treat God as though He were false. It is to deny the truthfulness of the One who cannot lie.

That is offensive to human pride, but it is exactly how serious unbelief is. People often want to speak about Jesus as though He were one option among many. John will not allow that. To reject Christ is to reject the testimony of God. To reject the Son is to reject the Father who sent Him. To refuse what God has said about Christ is not neutrality. It is accusation. It is to stand over God as judge rather than bow before Him as Lord.

This becomes even clearer when we consider what is being rejected. In Christ, God has provided atonement for sin. In Christ, God has provided cleansing from the defilement of sin. In Christ, God has given the Spirit to dwell in His people. These are not small blessings sitting at the edges of the gospel. These are central realities. If someone rejects the Son, he is not merely refusing one doctrine. He is refusing the very work by which God gives life to sinners.

For the one who believes, however, this testimony is not distant or cold. It becomes deeply personal. The believer can say, with humility and confidence, Jesus died for my sins. Jesus has cleansed me from my sins. The Spirit of God dwells in me because God has made me His own. I am no longer outside of His mercy, but inside of His promise. This is not self produced confidence. It is confidence rooted in the truthfulness of God.

That is why John says the believer has the testimony in himself. He does not mean the believer invents it. He means the believer receives and possesses what God has said as something personally true and saving. The testimony is no longer only external information. It is embraced by faith. It is held in the heart because it has been received from God.

But for those who reject God’s testimony, the result is severe. They reject, in one way or another, that Christ has truly atoned for sin. They reject that He truly cleanses sinners from moral defilement. They reject that the Spirit truly testifies to Him. And if they reject all of that, they also reject the resurrection as God’s final and public confirmation. If they do not believe what God has done to provide life, how can they claim to have life?

Galatians 4:4-7 helps bring this into even sharper focus. God sent forth His Son in the fullness of time to redeem those under the law, so that they might receive adoption as sons (Galatians 4:4-5). Then God sent the Spirit of His Son into their hearts, crying, “Abba! Father!” (Galatians 4:6). That means the work of Christ and the gift of the Spirit are not separate ideas floating around the gospel. They are joined in God’s purpose to redeem, adopt, and give an inheritance to His people. To reject the Son is to reject the whole saving movement of God toward sinners.

Jesus Was Always The Promise

John’s argument does not appear at the end of Scripture as a new religious idea. The life that is found in the Son is the fulfillment of what God has been doing from the beginning. If we disconnect 1 John from the rest of the Bible, we shrink the glory of the passage. John is not inventing a message. He is declaring the fulfillment of one.

When God called Abraham, He made promises that were larger than immediate comfort or visible earthly success (Genesis 12:1-3). Yes, the promises included land, descendants, and blessing. But even there, the scope was already greater than one man’s lifetime or one nation’s temporary prosperity. God said that in Abraham all the families of the earth would be blessed (Genesis 12:3). That promise was always moving outward and forward. It was always pressing toward something greater.

Genesis 15:18 records God’s covenant promise concerning land, but the New Testament shows us that the promise was not exhausted in geography alone (Genesis 15:18). Abraham himself understood that God’s promise reached beyond what he could immediately see. Hebrews tells us that when Abraham offered up Isaac, he did so believing that God was able even to raise the dead (Hebrews 11:17-19). That is a remarkable statement. Abraham’s faith was not merely faith in earthly outcomes. It was faith in the God who gives life beyond death.

That is why Hebrews 11:39-40 matters so much. The faithful of old did not receive the fullness of what was promised in their own day, because God had provided something better that would be brought to completion in His larger plan (Hebrews 11:39-40). Abraham was not finally looking for a temporary, earthly arrangement that would fade away. He was looking toward the fulfillment of God’s promise in a way greater than immediate possession.

Galatians 3:16-17 makes the issue explicit. The promises were made to Abraham and to his offspring, and Paul says that offspring is Christ (Galatians 3:16-17). That means Jesus was not added onto the promise later as an afterthought. He was always the center toward which the promise was moving. God was always working toward life in the Son.

This matters because people often reduce the promises of God to things that can be measured only in this life. They want blessing without redemption. They want inheritance without resurrection. They want God’s favor without the Son. But that is not the shape of Scripture. If we reduce the promise to earthly benefits only, we make it far smaller than God intended. The promise was moving toward eternal life in a heavenly kingdom, secured by Christ.

This also means Christians must not treat faith as though it can be built on personal reasoning alone while ignoring the history of God’s work. We cannot throw away the biblical record and then claim to believe in God. The Scriptures do not give us isolated religious slogans. They give us the unfolding work of God through history, covenant, promise, judgment, mercy, and fulfillment. On every page of human rebellion, the fingerprints of God are there, showing that He has not abandoned His purpose to save a people for Himself.

That is part of what makes unbelief so serious. The rejection of Christ is not simply the rejection of one claim at one moment. It is the rejection of the long and faithful testimony of God across the whole story of redemption. God has not hidden His purpose. He has revealed it over generations, and all of it reaches its fulfillment in His Son.

Those Who Believe The Testimony Are Alive

John then states the testimony with remarkable simplicity. “And this is the testimony, that God gave us eternal life, and this life is in his Son” (1 John 5:11). That sentence is simple, but it is heavy with meaning. Eternal life is not discovered somewhere inside ourselves. It is not earned by religious devotion. It is not achieved by moral effort. It is given. And it is given in the Son.

That means eternal life is personal because it is tied to a person. John does not say life is found in a method, a system, or a philosophy. He says it is in His Son. The center of salvation is Christ Himself. To have the Son is to have life. To be without the Son is to remain without life.

Verse 12 presses this truth with total clarity. “Whoever has the Son has life; whoever does not have the Son of God does not have life” (1 John 5:12). John does not leave room for a middle category. There is no safe position between belief and unbelief. There is no category for those who admire Christ but do not belong to Him. There is no life outside of the Son.

That is one of the most direct statements in all of Scripture. Eternal life is not spread across many roads. It is not hidden behind mystery. It is in Christ. This means the gospel is both exclusive and gracious. Exclusive, because life is in one place only. Gracious, because God has freely given that life in His Son.

This life is not symbolic only. It is not a poetic way of speaking about inspiration or moral improvement. Those who trust in Christ for the atonement of their sins, for cleansing from the defilement of sin, and for access to a holy God as their Father, truly have eternal life now. They belong to God now. They are united to Christ now. And because Christ was raised from the dead, they also have the sure hope that they too will be raised.

This is where the resurrection becomes central. If Christ remained in the grave, then the promise of life would collapse. But He did not remain in the grave. The resurrection is not a decorative doctrine placed on top of Christianity. It is God’s confirming witness that life is truly found in His Son. Those who reject Jesus reject that confirming testimony as well. But those who are found in Christ are joined to the One who has already conquered death.

Romans 8:9-11 helps explain this with great clarity. The Spirit of God dwells in believers, and if Christ is in them, though the body is dead because of sin, the Spirit is life because of righteousness (Romans 8:9-11). Then Paul adds that the Spirit who raised Jesus from the dead will also give life to their mortal bodies. That means eternal life is not merely something believers wait for in the distance. It is already present in union with Christ by the Spirit, and it will one day be openly revealed in resurrection.

That also connects to inheritance. The inheritance promised by God is not imaginary. It is not thin or unreal. Christ has secured a real future for His people, and those who belong to Him will share in what He has obtained. Because He lives, they will live also. Because He has been raised, they will be raised. Eternal life is not a vague wish. It is the settled future of all who are in the Son.

Jesus Himself taught this when He answered the Sadducees in Matthew 22. He said that God is not the God of the dead, but of the living (Matthew 22:23-33). In other words, the covenant promises of God do not end in the grave. Those who belong to Him are not finally defined by death. The life of God’s people is held in the faithfulness of God, and the resurrection will make that life visible in full.

What Was Lost Has Been Restored

This hope is not disconnected from the opening chapters of the Bible. In Genesis 3, after sin entered the world, humanity was driven out of the garden and barred from the tree of life (Genesis 3:22-24). That moment was not small. It revealed the true consequence of sin. Fellowship with God was broken. Life in blessed communion with Him was lost. Humanity did not simply become morally confused. Humanity came under death.

The barring of the tree of life showed that sinners could not remain forever in that state and still live in the presence of God. Access was cut off. What had been given was no longer open to man in rebellion. The way to life was guarded. That is the world every one of us enters. A world east of Eden, marked by death, separation, and the curse.

But the story did not end there. Revelation 2:7 speaks of the tree of life again, this time as a promised gift to the one who conquers, in the paradise of God (Revelation 2:7). That is not accidental. The Bible closes the circle by showing that what was barred because of sin is restored through the redeeming work of Christ. The loss in Eden is not ignored. It is overcome.

This restoration is tied directly to the resurrection. Christ has gone through death and come out the other side in victory. He has overcome what Adam’s race could not overcome. He has done what no sinner could do for himself. He has opened the way to life. That is why the resurrection matters so much. It is not just proof that Jesus was powerful. It is proof that death has been defeated in Him.

Paul makes this plain in 1 Corinthians 15:12-19. If there is no resurrection, then Christ has not been raised. If Christ has not been raised, preaching is empty, faith is empty, sins remain unforgiven, and those who have died in Christ have perished. Christianity without resurrection is not Christianity at all. It is a false hope that cannot save.

But Christ has been raised. That means the whole structure stands. Sin has truly been answered. Death has truly been challenged. The people of God truly have hope. What seemed permanently lost has been restored through the obedience, death, and resurrection of Christ.

This restoration is not merely cosmic in an abstract sense. It is personal. The enmity between God and sinners has been removed in Christ. Those who believe are no longer far off. They are brought near. They are adopted as sons and daughters. The Spirit dwells in them. Life has already begun in them, and the hope of the coming world is now set before them.

This is why Christians must think of salvation in full biblical terms. We are not merely forgiven and left waiting in uncertainty. We are forgiven, reconciled, adopted, indwelt by the Spirit, and promised resurrection. The Son does not save halfway. He restores fully. What was lost in Adam is restored in Christ, and the tree of life stands at the end of the road for those who belong to Him.

Conclusion

John does not leave this passage in the realm of theory. He presses the issue until it becomes unavoidable. God has testified concerning His Son. He has not spoken uncertainly. He has not spoken partially. He has borne witness that eternal life is found in Christ.

That means there is no neutral ground. The one who believes in the Son receives the testimony of God and has life. The one who rejects the Son rejects the testimony of God and makes Him a liar. John will not let us hide behind softer language. That is how serious the matter is.

But for the believer, this passage is not meant to crush. It is meant to steady. Jesus has all the testimony necessary to confirm that He is the Son of God. The Father has testified. The Spirit has testified. The resurrection stands as God’s final confirming witness. The believer does not have to create assurance from within. He rests in what God has said and done.

The Spirit who raised Jesus from the dead now dwells in those who belong to Christ. That means eternal life is not just a distant promise. It is already present in union with the Son. And because Christ has overcome death, His people will overcome death as well. They will be raised. They will live. They will inherit what God has promised. They will have access to the life that was lost through sin and restored through the Redeemer.

So the passage leaves every reader with a clear question. Do I believe what God has said concerning His Son? That is not a small question. It is the dividing line between life and death. Whoever has the Son has life. Whoever does not have the Son of God does not have life.

Scripture References

Galatians 4:4-7
God sent His Son to redeem His people, adopt them as sons, and give them the Spirit, showing that salvation includes both nearness to God and inheritance through Him.

Genesis 12:1-3
The call of Abraham begins the visible unfolding of God’s covenant promise, through which blessing would come to all the families of the earth.

Genesis 15:18
God’s covenant with Abraham included a real inheritance, but the larger fulfillment of that promise reaches beyond earthly land to the fullness of God’s redemptive purpose.

Hebrews 11:17-19
Abraham’s willingness to offer Isaac shows that his faith rested in the God who is able to raise the dead.

Hebrews 11:39-40
The faithful of old did not receive the fullness of what was promised in their lifetime, showing that God’s plan was moving toward something greater.

Galatians 3:16-17
Paul makes clear that the promise to Abraham ultimately points to Christ, the true offspring in whom the covenant reaches its fulfillment.

Romans 8:9-11
The Spirit who raised Jesus from the dead dwells in believers and guarantees their future resurrection.

Genesis 3:22-24
Sin brought exile and barred access to the tree of life, revealing the seriousness of death and separation from God.

Revelation 2:7
Christ promises the tree of life to the one who conquers, showing the restoration of what was lost in Eden.

Matthew 22:23-33
Jesus teaches that God is the God of the living and defends the reality of resurrection from the Scriptures.

1 Corinthians 15:12-19
Paul shows that if Christ has not been raised, faith is empty and hope collapses. The resurrection is essential to the gospel.