Testing the Spirits
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Scripture: 1 John 4:1–6
Read 1 John 4:1–6 before proceeding. Keep your Bible open throughout this session.
Beloved, do not believe every spirit, but test the spirits to see whether they are from God.
1 John 4:1
A Word of Discernment
The letter now turns, briefly but sharply, to the subject of discernment. John has been developing the theme of love of the brother, and he will return to it in the verses just ahead: indeed, the great love passage of 4:7–21 is next session’s material. But in between, he pauses to insert a warning. Before he gathers the threads of love into their fullest treatment, he addresses something his readers need to know first. Not every spirit is from God. Not every voice that claims to speak for God speaks truth. The Christian community is not meant to receive all spiritual messages uncritically. Discernment is part of Christian faithfulness, and John gives his readers the test by which the discernment can be carried out.
The passage is only six verses long, but it is weighty. It stands in the letter as a kind of hinge: connecting the earlier warnings about antichrists in chapter two to the developed teaching on love in the remainder of chapter four. John’s concern is the same concern he has had throughout. False teachers have arisen from within the Christian community. They are speaking with apparent spiritual confidence. They are drawing members away from the apostolic proclamation and offering something that presents itself as a higher or deeper form of spirituality. And the ordinary Christian, faced with these competing claims, needs to know how to tell the difference. John tells them. The test is Christological.
In this session we will walk through the passage carefully. We will consider John’s direct command: do not believe every spirit, but test the spirits. We will examine the specific test he gives: every spirit that confesses Jesus Christ has come in the flesh is from God, and every spirit that does not confess Jesus is not from God. We will see what he says about the spirit of the antichrist, which is already in the world. We will note his encouragement that his readers have already overcome these false spirits, because He who is in them is greater than he who is in the world. And we will consider the final distinction he draws: we are from God; whoever knows God listens to us, and whoever is not from God does not listen to us.
The passage has direct application to our own age. We live in a moment of widespread spiritual claims, within the Church and outside it. Voices that claim divine authority compete for influence in Christian circles. Teachers come and go with their latest insights about God, the spiritual life, the church, and the future. Outside formal Christianity, a vast marketplace of spiritual products offers all manner of connection with the transcendent. The pressure to accept whatever presents itself as spiritual, or at least to refuse to judge, is substantial. John’s counsel cuts across this pressure. Test the spirits. Not every voice deserves to be believed. And the test is available.
Do Not Believe Every Spirit
John opens with a direct command. Beloved, do not believe every spirit, but test the spirits to see whether they are from God, for many false prophets have gone out into the world.
Several things in this opening sentence deserve attention. First, the affectionate address: beloved. John writes as a pastor, not as a scold. His warning is meant as protection, not as a rebuke for gullibility. Second, the imperative is negative and positive together. Do not believe every spirit; test the spirits. Both halves matter. Christians are not called to an undiscerning openness to every claim of spiritual authority, nor are they called to a cynical rejection of all such claims. They are called to testing: to careful evaluation, applying criteria that have been given to them for just this purpose. Third, the reason: many false prophets have gone out into the world. Not a theoretical danger. A present reality. The false teachers are not hypothetical; they are active, they are circulating, and they are doing real damage in Christian communities.
What the Spirits Are
A word about what John means by spirits. He does not mean personal spiritual beings in every case, though some of what he says applies to such beings. Primarily, he is talking about spiritual messages, inspired utterances, teachings that claim spiritual authority. The false teachers of John’s day did not usually present themselves as speaking in their own name. They presented themselves as speaking for God, as bearing spiritual insight that the ordinary members of the congregation did not have, as giving voice to realities that transcended ordinary apostolic teaching. Each such utterance was, in the language of the time, a spirit: a message carried by spiritual authority. Some such spirits were from God. Others were not. And John calls his readers to evaluate them.
This means the passage applies broadly to modern situations as well. The spiritual claims of our own day come from many different sources. Some are from preachers who claim prophetic authority. Some are from books and podcasts that present themselves as speaking under spiritual inspiration. Some are from individuals who report spiritual experiences and offer their content as spiritually authoritative. Some are from broader cultural currents that speak in spiritual language while drawing from sources remote from Christianity. The Christian encountering any of these is called to test: not to accept or reject reflexively, but to evaluate by criteria the Scriptures themselves have provided.
The Question of False Prophets
John identifies the problem as false prophets who have gone out into the world. Prophet here is not being used in the Old Testament sense only, though it includes that background. It refers to anyone who speaks with claimed divine authority: anyone who presents his message as a word from God. False prophecy can take the form of outright religious opposition to Christianity, but it can also take the form of teaching that arises within the Christian community and presents itself as Christian while actually distorting what Christianity is. The latter is what John is primarily concerned about. The false teachers he has been writing against have not renounced the name of Christ. They have reinterpreted it. They have kept the vocabulary while changing the meaning. This is the dangerous form of false prophecy: the form that can deceive the faithful because it uses their language.
The Test
John now gives the test, and he gives it with characteristic directness. By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God, and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you heard was coming and now is in the world already.
The test is Christological. Not ethical in the first instance, though ethics follows. Not experiential, though spiritual experience may be present on both sides. The test is about what the spirit in question confesses concerning Jesus Christ. A spirit that confesses Jesus Christ has come in the flesh is from God. A spirit that does not confess Jesus is not from God. This is not complicated, and it is not meant to be. John wants his readers to have a criterion they can apply: a criterion simple enough that an ordinary Christian can use it in real-time situations, and decisive enough that the application actually settles the question.
Has Come in the Flesh
The specific phrasing is important. Jesus Christ has come in the flesh. John is not asking merely whether the spirit names Jesus. False teachers named Jesus often enough. He is asking whether the spirit confesses that Jesus Christ, the eternal Son, actually came in the flesh. Actually became human. Actually took on a body that could be heard and seen and touched, as John has already emphasized in the prologue. The docetic false teachers John was writing against denied exactly this. They conceded that Jesus was some kind of spiritual figure, that a divine Christ had appeared on earth in some way. What they denied was that the divine Christ had actually become flesh. Spirit was pure; flesh was contaminated; the divine could not really become material, in their view. And so they taught a Christ who only seemed to be human, only seemed to suffer, only seemed to die.
John’s test exposes this error directly. Has come in the flesh. Perfect tense in the Greek: a past event with continuing effect. Jesus Christ became human, and He remains human. The Son did not shed His humanity at the resurrection; the man Jesus, now glorified, is the one at the Father’s right hand. And the spirit that denies this, however elevated its spiritual pretensions, is not from God. The confession of the real incarnation is the watershed. Everything else rests on it.
The confession must also carry the apostolic content of the words. A group may say Jesus, Christ, and even incarnation while filling those words with meanings that deny the Jesus the apostles proclaimed. The test is not whether a formula is pronounced. It is whether the confessed Jesus is the eternal Son who truly became flesh, suffered, died, rose, and reigns. John’s test is not a verbal charm; it is a confession with content.
Why Christology Is the Test
Why does John make Christology the test? Because Christology is the heart of Christianity. Everything Christians believe and do flows from what is true about Jesus Christ. If He was not truly God, then His death does not have the weight we have ascribed to it. If He was not truly human, then His death was not actually a death for humans. If the Father did not send the Son into the flesh, then the incarnation is a picture rather than a reality, and the picture will not bear the weight of salvation. The entire Christian faith stands or falls on the person of Christ. To get Christ wrong is to have lost everything else that matters, however correctly the rest might be framed.
This is why the ancient Church fought the Christological battles so fiercely. The councils of the fourth and fifth centuries (Nicaea, Constantinople, Ephesus, Chalcedon) were not arguments about abstract metaphysics. They were arguments about whether Christianity itself would survive in its apostolic form. If Arius was right that the Son was not of the same substance as the Father, then the Son who died on the cross was not the eternal God bearing our sins, and the salvation claimed for His death is of another kind than the Gospel teaches. If the docetists were right that the Son did not take real flesh, then He did not really bear the human condition, and what happened in Him did not really happen to us. Getting Christology right is not an optional exercise for the theologically inclined. It is the task of every generation of the Church, because the life of the Gospel depends on it.
The Spirit of the Antichrist
John identifies the spirit that denies Jesus. This is the spirit of the antichrist, which you heard was coming and now is in the world already. John is pulling together what he said in chapter two about the antichrists in the plural (the false teachers who had gone out from the congregation) with the language of the antichrist in the singular. Both are present. Both share the same spirit. And this spirit, which the Christian tradition had been expecting as an end-time opposition, is already in the world. It was already operative in the false teachers of John’s day. It has continued to operate, in varying forms, across the centuries. And it will continue to operate until the Lord returns.
The continuing operation of the antichrist spirit is worth noting carefully. It is not only an end-time phenomenon. It has been at work since the apostolic age, wherever Christ is denied or distorted. Every generation of the Church has faced some version of it. Docetism in the first century. Arianism in the fourth. The various denials of Christ’s divinity, His humanity, or His bodily resurrection that have appeared throughout Christian history all share the spirit John is identifying here. Other grave errors also oppose the Gospel. Pelagianism, for example, attacks the saving work of Christ by making human ability decisive, and our Confessions reject it firmly (AC II; AC XVIII). Such errors are deadly, but they should not all be collapsed into John’s precise antichrist marker, which centers on denying or distorting the incarnate Christ. The Christian who learns to recognize this spirit in one of its manifestations is better equipped to recognize it in others. The specific manifestations change. The underlying orientation (away from the real, incarnate, crucified, risen Christ) remains the same.
You Are from God
John now turns from the false spirits to his readers, and gives them an encouraging word. Little children, you are from God and have overcome them, for He who is in you is greater than he who is in the world.
This is pastoral. John does not leave his readers anxious about whether they can stand against the false teachers. He reassures them. You are from God. You have overcome them. The one in you is greater than the one in the world. The false teachers had left the congregation, as John noted in chapter two. The Christians who remained were the ones who had resisted the deception. John affirms this. Their remaining in the apostolic faith was itself evidence that they were from God, that the Spirit who indwelt them had proven more powerful than the spirit at work in the false teachers.
He Who Is in You
The one who is in you is the Holy Spirit, given to every baptized Christian. John has already named this Spirit in 3:24: by the Spirit whom He has given us, we know He abides in us. Now he develops the thought further. The Spirit who is in the Christian is greater: greater than the spirits of deception, greater than the powers of this age, greater than the enemy who stands behind every form of opposition to the truth. This is not a claim about the Christian’s own strength. It is a claim about the one who indwells the Christian. The Christian who feels weak against the pressure of false teaching or the seductions of the surrounding culture does not need to find confidence in his own resources. The resources are not his. They are the indwelling Spirit’s. And the Spirit is greater than any opposing power.
This is an important word for ordinary Christians who feel the force of the cultural pressures around them. Christianity is contested in the modern West. Educated elites often regard the faith with contempt. Cultural institutions are widely shaped by assumptions incompatible with Christianity. Individual Christians, especially young ones, can feel isolated and weak against the prevailing tides. John’s word reaches into this situation. You do not stand against these pressures alone. The Spirit who indwells you is greater than the spirit of the age. You are not hoping that Christianity can survive against hostile pressure; you are in communion with the one who has already overcome the world. This is not triumphalism. It is sober confidence, grounded in what is actually true about the Spirit given to the baptized.
Have Overcome
The verb John uses, have overcome, is in the perfect tense, a completed action with continuing effect. The overcoming is not something the Christian is still anxiously trying to accomplish. It has already happened. The false spirits have been overcome, in the victory of Christ that is now extended to those who belong to Him. The Christian lives on the other side of a victory already won. What remains is to walk in the reality of that victory: to stand firm in what has been given, to resist the lingering activities of the defeated enemy, to hold fast to the Christ who has overcome on the Christian’s behalf.
Two Hearings
John now makes a final, striking distinction. They are from the world; therefore they speak from the world, and the world listens to them. We are from God. Whoever knows God listens to us; whoever is not from God does not listen to us. By this we know the Spirit of truth and the spirit of error.
The false teachers are from the world, John says. Not in the sense that they were created beings. Everyone is that. In the sense that their source, their orientation, their fundamental allegiance, is to the fallen order rather than to the Father. They speak from the world, and this is why the world listens to them. There is a congruence between their speech and the world’s hearing. The one speaks what the other wants to hear. The messages of the false teachers find ready audience in the world because they are, at root, expressions of the world’s own perspective dressed in spiritual language.
The Apostolic We
Over against this, John places the apostolic we. We are from God. Whoever knows God listens to us. The we here is John and the other apostles: the ones whose testimony the letter has been proclaiming from its opening sentence. The apostles are from God. Their message is from God. And those who know God recognize this. They hear the apostolic proclamation and find in it the voice of the Father they know. This is why the false teachers who had gone out from the congregation had shown, by their departure, that they did not belong. The true members of the community, the ones who knew God, had recognized the apostolic voice as their own and had remained in it.
This is an important claim about the relationship of Christian believers to the apostolic witness we now have in the New Testament. The true Christian, John is suggesting, recognizes the apostolic voice. Something in him responds to it. The same Spirit who indwells him is the Spirit who inspired the apostolic proclamation, and the resonance between the two is a mark of the authentic Christian life. This is not to say that every Christian immediately grasps every difficulty in apostolic writing, or that Christian recognition always takes the form of immediate agreement. It is to say that over time, as the Christian is formed by the Scriptures, the apostolic voice becomes the familiar voice: the voice of the Father he has come to know. The one who hears that voice and finds it foreign, or finds himself more at home with voices speaking from the world, has reason to examine where his own allegiance actually lies.
By This We Know
John closes the passage with one of his characteristic summaries. By this we know the Spirit of truth and the spirit of error. Two spirits are at work in the world. One is the Spirit of truth, sent by the Father through the Son to indwell the Christian community. The other is the spirit of error, operative in the false teachers and in the world that receives their message. The Christian is called to distinguish. The test John has given (the Christological test, the apostolic hearing, the presence of the Spirit who is greater than the one in the world) is sufficient for the task.
This is realistic and empowering at once. Realistic, because it acknowledges that error is not always obvious and that Christians cannot simply accept everything spiritual without evaluation. Empowering, because it provides the means of evaluation. The Christian is not left to sort through spiritual claims by his own resources alone. He has the apostolic witness. He has the Christological test. He has the indwelling Spirit. He has the community of the faithful who share these gifts. With these, he can distinguish truth from error, not perfectly, perhaps, but sufficiently for faithful life in an age of competing claims.
Gathering the Threads
John has given his readers, in this brief passage, a word of sober discernment at the heart of the letter. Not every spirit is from God. The Christian is called to test, using the criterion of what the spirit confesses concerning Jesus Christ. Every spirit that confesses Jesus Christ has come in the flesh is from God. Every spirit that denies this is not from God, but is from the spirit of the antichrist that is already operative in the world.
The Christian who faces the competing claims of his own age is not helpless. He has the apostolic witness of the New Testament to test every claim against. He has the Spirit of truth indwelling him, who is greater than the spirit of error operative in the world. He has the community of faith that hears and responds to the apostolic voice. And he has the promise that he has overcome the false spirits, not by his own strength, but by the greater strength of the one who indwells him.
For the Lutheran Christian, the passage confirms several things that Lutheran theology has long emphasized. The priority of Christology as the center of Christian faith. The authority of the apostolic Scriptures as the norm by which all spiritual claims are evaluated. The real presence of the Holy Spirit in the baptized believer as the indwelling power of the Christian life. The objectivity of the victory Christ has won, in which the Christian participates by faith. All of these are present in John’s brief but weighty passage, and all of them continue to orient Christian life in the twenty-first century as fully as they did in the first.
For Discussion
The following questions are for group discussion or personal reflection.
John commands his readers to test the spirits rather than believe every spirit. In your own life, where are you called to such testing? What spiritual claims (in the Church, in the culture, in your own inner thoughts) require evaluation rather than automatic acceptance?
The test John gives is Christological: does the spirit confess Jesus Christ has come in the flesh? Why does Christology serve as the decisive test? What happens when Christology is compromised, even slightly?
John says the spirit of the antichrist is already in the world. What forms do you see this spirit taking in your own time: within Christian circles, in the surrounding culture, or in both?
He who is in you is greater than he who is in the world. How does this truth change the way you face cultural or intellectual pressure against the Christian faith? Where have you needed to be reminded of this?
John says those who know God listen to the apostolic witness, and those who do not are not persuaded by it. Have you experienced this: finding yourself resonating with Scripture over time, or encountering people who simply cannot hear what it says? What do you make of this pattern?
The Spirit of truth and the spirit of error are at work in the world. What practices have you found helpful for discernment: for distinguishing the true Spirit’s voice from the voices that would lead you astray?
Looking Ahead
Next week we reach one of the most beloved passages in the entire New Testament. The last part of chapter four develops John’s teaching on love to its fullest height. God is love. In 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. Perfect love casts out fear. We love because He first loved us. These are the verses Christians have been meditating on for two thousand years, and they will reward our careful attention. The session will require pastoral warmth more than rigorous argumentation. This is love language at its deepest, and it asks to be received rather than analyzed.
Before next session, read 1 John 4:7–21 at least twice. Pay attention to the returning presence of the propitiation language from chapter two, now placed in the context of God’s love rather than over against it. And notice how the love of God and the love of the brothers are so tightly woven together that they cannot really be separated. The love that God has shown us is the love we are called to show one another. The incarnation is the ground, the measure, and the power of Christian love for the brother.
Closing Prayer
Heavenly Father, who sent Your Son into our flesh for our salvation, grant us discernment to test the spirits that press upon us, and grace to recognize the voice of Your truth. Keep us from every spirit of deception, and strengthen us in the confession of Jesus Christ come in the flesh. We thank You for the Spirit You have placed within us, who is greater than every spirit at work in the world. By Him, keep us listening to the apostolic voice that still speaks in Your Word, that we may abide in the truth and bear witness to it in our own generation. Through the same Jesus Christ our Lord, the eternal Word made flesh. Amen.