The Four Ones
The Father, the Son, and the Spirit — and the Believer Drawn In
Rooted in John 14:15-27 · Psalm 118 · Philippians 4 · Matthew 6 · 1 John 4 · 2 Corinthians 10 · Romans 8 · Ephesians 3 · Lamentations 3 · 2 Peter 1
Before the World Began
Before there was a world, before there was a first sunrise or a first breath drawn by any living thing, the Father, the Son, and the Holy Spirit existed in perfect union, three Persons and one God, loving one another, glorifying one another, complete in themselves and lacking nothing. That is the deepest truth behind everything that follows in this teaching: God did not create you because He was lonely. He created you because the love that already existed within the Godhead was the kind of love that overflows. It was never content to stay sealed off. It reached outward. And Scripture tells us plainly that the destination of that reaching was never merely to make servants, or subjects, or distant admirers. The destination was fellowship. The destination was you, brought in.
This is the heart of what we are calling "The Four Ones." Three Persons of the Godhead, perfectly One, and the believer, through the finished work of Jesus Christ, drawn into that very oneness as a fourth. Not absorbed into deity, not made equal to God in nature or authority, but genuinely, truly united with the Father, the Son, and the Spirit in a bond of love, indwelling, and life. This is not poetic exaggeration. It is the plain teaching of Jesus Himself, spoken to His disciples on the last night before the cross, in what we know as the Upper Room Discourse, recorded in John chapter fourteen.
Notice what Jesus is praying for here. He is not simply asking that believers get along with one another, though that matters too. He is asking that the same kind of oneness that exists between the Father and the Son would become the pattern and the actual reality of the believer's union with God. "May they also be in us." In us. Not alongside, not near, not admiring from a respectful distance — in. This teaching exists to walk carefully, verse by verse and cross-reference by cross-reference, through what that means, why it matters, and how a believer actually lives inside of it day by day.
We will move slowly through John 14:15-27, because that passage is the cornerstone. From there we will widen out to see how this same reality of union with God touches everything else Scripture teaches about peace, contentment, the renewing of the mind, and the confidence a believer can carry because of who is for them and who lives within them. This is meant to be read slowly, prayed through, and taught from a place of settled conviction — not as an abstract doctrine to admire, but as the actual address at which every believer now lives.
The First One: God the Father
The Father is the source. Every plan of redemption begins in His heart, before it is ever accomplished by the Son or applied by the Spirit. He is not a distant deity who reluctantly tolerates the world He made; He is the One who chose, before the foundation of the world, to set His love on a people and to bring them into His own family.
Adoption is the operative word. The Father did not simply forgive a debt and send us on our way. He brought us into His household, gave us His name, and made us heirs alongside the Son. Every good and perfect gift a believer receives flows from this Father's heart — not the reluctant generosity of a stranger, but the abundant provision of a Father who delights in His children.
The Second One: God the Son
If the Father is the source, the Son is the way. He is the One through whom the Father's plan of adoption actually becomes possible for people who were, by nature, separated from God by sin. Nothing in this teaching can be understood apart from the cross, because the cross is the doorway through which the Fourth One is brought into the fellowship of the Godhead.
This is not one path among many. Jesus is not describing Himself as a helpful guide who points toward the Father from a distance. He is the way itself — the actual means of access. Every believer who is now included among the Four Ones got there through Him and through no other door. This should produce in us both deep humility and deep confidence: humility, because we did not earn our way into this fellowship; confidence, because the way was secured by the Son of God Himself and cannot be undone.
The Son's obedience unto death is what makes union with the Godhead possible for sinful people. He is described as the mediator, the one who stands between (1 Timothy 2:5), but He does not merely stand between as a negotiator. He unites. Through His blood, the wall of hostility described in Ephesians 2 is torn down, and what was once separated is brought together — first Jew and Gentile into one new man, and beyond that, redeemed humanity into fellowship with God Himself.
The Third One: God the Holy Spirit
If the Father planned redemption and the Son accomplished it, the Holy Spirit is the One who applies it — personally, individually, permanently. He is not a force or an influence; He is the third Person of the Godhead, fully God, and He is the one who takes up residence inside every believer at the moment of faith.
This is a staggering claim, and it is easy to read past it because it has become familiar language in the church. Stop and let it register: the same Spirit who moved over the waters at creation, who filled the tabernacle and the temple with the visible glory of God, who empowered the prophets and anointed the Son of God Himself at His baptism — that Spirit now dwells inside ordinary believers. Not visiting. Dwelling. Permanently.
Jesus describes the Spirit's coming as something better, in a sense, than His own physical presence among the disciples: "But very truly I tell you, it is for your good that I am going away. Unless I go away, the Advocate will not come to you" (John 16:7). The Spirit's indwelling is not a consolation prize for missing out on walking with Jesus in the flesh. It is the very mechanism by which the Father and the Son now make their home within the believer, which brings us to the cornerstone passage of this entire teaching.
The Cornerstone: John 14:15-27
On the last night before His crucifixion, Jesus gathered His disciples in an upper room and gave them words meant to steady them for everything that was about to happen — His arrest, His death, and the apparent collapse of everything they had hoped He would be. Into that moment of fear and confusion, Jesus spoke some of the most intimate words recorded anywhere in Scripture. We will walk through this passage verse by verse.
"If you love me, keep my commands" (v. 15)
Love and obedience are not presented here as two separate things, one earning the other. Obedience is simply what love looks like when it is genuine. This is not a demand for perfection before relationship is possible; it is a description of what naturally follows once relationship exists.
"Another advocate to help you and be with you forever" (vv. 16-17)
Notice the shift Jesus describes: the Spirit who has been with the disciples will soon be in them. This is the promise of permanent indwelling, and it is the foundation of everything that follows in this teaching. The Fourth One is not merely accompanied by God from the outside; the Fourth One is inhabited.
"I will not leave you as orphans" (v. 18)
This single verse has comforted more grieving and abandoned hearts across church history than perhaps any other promise in Scripture. Jesus is not merely promising to check in from time to time. He is promising presence — the opposite of the orphan's fear of being forgotten and unwanted.
"You will realize that I am in my Father, and you are in me, and I am in you" (v. 20)
This is the clearest single statement of the Four Ones in all of Scripture. The Son in the Father. The believer in the Son. The Son in the believer. This is not mystical exaggeration; it is the plain word of Jesus describing the actual relational reality that exists between the Godhead and every believer united to Christ.
"We will come to them and make our home with them" (v. 23)
The word translated "home" here (Greek: mone) is the same root word used earlier in John 14:2, where Jesus speaks of the many rooms in His Father's house — literally, many dwelling places. Jesus is drawing a direct parallel: just as He is preparing a heavenly dwelling place for believers, the Father and the Son together make their dwelling place within the believer here and now. Heaven's address, in a very real sense, is already established inside every believer's heart through the Spirit, long before the believer physically arrives there.
"The Advocate... will teach you all things and remind you" (v. 26)
The Spirit's indwelling ministry is not passive. He teaches. He reminds. He keeps the words of Christ alive and active within the believer, long after the moment they were first heard. This is why Scripture continues to speak with power centuries after it was written — the same Spirit who inspired it is the one who illuminates it in the heart of every believer who reads it.
"Peace I leave with you; my peace I give you" (v. 27)
This is not the fragile, circumstantial peace the world offers, the kind that evaporates the moment things go wrong. This is Christ's own peace, given to the believer as a permanent possession, flowing directly out of the indwelling presence just described. Because the Fourth One is never left alone, the Fourth One need never be ruled by fear.
The Fourth One: The Believer Drawn In
Everything in the previous sections converges here. The Father planned it. The Son purchased it. The Spirit applies it and indwells it. And the result, for every person who places their trust in Jesus Christ, is not merely forgiveness of sins — though that alone would be an immeasurable gift — but actual inclusion in the fellowship of the Godhead as a fourth party to a union that was, until the cross opened the way, closed to fallen humanity.
"Participate in the divine nature" is a phrase worth sitting with. Peter is not teaching that believers become gods, or that the Creator-creation distinction dissolves. He is teaching that believers genuinely share, through the Spirit's indwelling presence, in the life, holiness, and love that belong to God's nature. This is the theological ground beneath the Four Ones: not that the believer becomes divine, but that the believer is brought into real, living, permanent relationship with the divine — indwelt, adopted, and united.
This changes the believer's identity at the deepest level. You are no longer simply an individual who believes certain things about God from the outside. You are, through Christ, a participant in the ongoing fellowship of Father, Son, and Spirit. Every promise of Scripture concerning God's care, provision, peace, and strength flows out of this fact — because these are not blessings God dispenses to people standing at a distance. They are the natural overflow of a relationship in which the believer is already, truly, included.
Living in the Fellowship: Cross-Referenced Scriptures
If the Four Ones describes who the believer now is — united with Father, Son, and Spirit — then the passages below describe what that union produces in the daily life of the believer. Each one, read on its own, is a beautiful and true promise. Read together, in light of John 14, they become something more: the lived-out evidence that the believer really has been brought into the fellowship of the Godhead.
Rejoicing in the Day the Lord Has Made
This verse is often quoted as a general statement of gratitude, and it is that. But read in the context of the Four Ones, it takes on deeper weight. A believer united with the Father, indwelt by the Son through the Spirit, does not need to wait for perfect circumstances to find a reason for gladness. The day itself — any day, ordinary or difficult — belongs to the same God who has already made His home within the believer's heart. Rejoicing is not denial of hardship; it is confidence rooted in relationship.
Peace Through Prayer and the Presence of God
Paul writes these words from prison, and the connection to the Four Ones is direct. The peace that guards a believer's heart and mind is described as flowing through Christ Jesus — it is not a technique or a mindset, it is the fruit of union with the Son.
There is a threefold promise woven through this passage, and it is worth pulling apart slowly. First, our part: we give it to God — every anxiety, every burden, laid down in prayer and petition, with thanksgiving even before the outcome is known. Second, His response: He gives us peace over everything we surrender to Him, a peace that transcends our own understanding. We cannot even begin to understand or comprehend the peace given to us, because it comes from God, but we can rest and abide in it. And third, He goes further still: that same peace stands guard over our hearts and our minds in Christ Jesus. This third part is protection — protection from the adversary, from the enemy, because the heart and the mind are exactly where he works. Think of the garden. "Did God really say...? Surely you will not die." He twisted God's own word to Eve, planted doubt about God's goodness, and lied outright, because God had never said what the serpent claimed. Eve was deceived; she never took the doubt back to God to ask Him directly. The same tactic is still his tactic today — whispering that God wouldn't really do what He said, that you're not worth His care, that you don't deserve what He's promised. Knowing Scripture, and returning to God with it rather than sitting with the lie, is exactly what closes that door. It is our weakness turned into strength, because the peace that guards the heart and mind is not a feeling we manufacture — it is Christ Himself, standing watch.
Likewise, the strength Paul speaks of in verse 13 is not self-generated willpower; it is Christ's own strength, made available because Christ dwells within. Contentment, which Paul describes just before this in verses 11-12 as something he had to learn, is only possible because he is not facing his circumstances alone. The Fourth One never faces anything alone.
Freedom from Anxiety Through the Father's Care
Jesus grounds our freedom from anxiety in the Father's knowledge and care — "your heavenly Father knows." This is family language. It only makes sense in light of the adoption described earlier in this teaching. A hired servant might reasonably worry whether their needs will be noticed by a distant employer. A child, secure in a father's household, has a different basis for confidence altogether. The believer's freedom from worry is not a command to simply try harder not to worry; it is an invitation to remember whose household they now belong to.
Perfect Love Casting Out Fear
John is describing the security that comes from being fully known and fully loved by God. Fear of judgment loses its grip on someone who has been brought into genuine relationship with the One who judges. This is the emotional and relational fruit of the Four Ones: a believer indwelt by God does not relate to Him primarily as a fearful subject relates to a distant, exacting ruler, but as a beloved child relates to a Father whose love has already been proven at the cross.
Taking Every Thought Captive
This is an active, ongoing discipline, and it is only possible because of the indwelling Spirit described in John 14:26, who teaches and reminds. The Fourth One is not left to fight destructive or false thinking through willpower alone. The same Spirit who brings Christ's words to remembrance also equips the believer to identify and reject thoughts that contradict the truth of who God is and who the believer now is in Him.
If God Is For Us
Paul asks this question immediately after describing the believer's adoption as sons (Romans 8:15), the Spirit's own testimony with our spirit that we are children of God (Romans 8:16), and the certainty of future glory (Romans 8:17-18). The confidence of Romans 8:31 is not generic optimism. It is the direct, logical outflow of everything the Four Ones teaches: if the Father has adopted you, if the Son has died and risen for you, and if the Spirit lives within you, then no opposition — however real and painful — can ultimately separate you from that love (Romans 8:38-39).
Exceeding Abundantly Above All We Ask or Think
Paul specifically locates this abundant power "in us" — not merely available to us from a distance, but actively working within. This is the power of the indwelling Spirit, the same power that raised Christ from the dead (Ephesians 1:19-20), now residing in every believer who is part of the Fourth One. The scale of what God is able to do is not measured by the believer's own resources but by the unlimited resources of the God who now dwells within them.
New Mercies Every Morning
Written in the middle of the book of Lamentations, surrounded by grief over the destruction of Jerusalem, this passage is a startling turn toward hope in the darkest of circumstances. It reminds the Fourth One that relationship with God is not a one-time transaction that fades with time. His compassion is renewed daily. The believer who is united with Father, Son, and Spirit is not living off of a single moment of past grace; they are sustained by mercy that is fresh every single morning, because the God who indwells them does not grow distant or tired.
Living as the Fourth One: Practical Application
Doctrine that never reaches the kitchen table, the workplace, or the quiet moments of doubt at two in the morning has not yet done its full work. Below are practical ways this teaching is meant to shape everyday life.
- Begin each day acknowledging the indwelling presence of the Spirit rather than treating prayer as reaching out to a distant God. You are not initiating contact from far away — you are speaking to the One already at home within you.
- When anxious thoughts arise, remember Matthew 6 and Romans 8 together: the same Father who feeds the birds has already proven, through the cross, that He is for you, not against you.
- When tempted toward destructive or false thinking, actively take the thought captive as 2 Corinthians 10:5 describes — name it, compare it to what Scripture says is true, and release it rather than dwelling in it.
- Return often to John 14:20 as an anchor verse. Memorize it. Let "I am in my Father, and you are in me, and I am in you" become the sentence your identity rests on when circumstances try to convince you otherwise.
- Practice gratitude as an act of remembering whose household you belong to, not as a forced positivity technique. Psalm 118:24 and Lamentations 3:22-23 both root joy in who God is, not in how circumstances feel.
- Teach this to others plainly. The doctrine of the Four Ones is not reserved for theologians; it is the plain teaching of Jesus to ordinary fishermen and tax collectors on the night before His death. It belongs to every believer.
- When you feel like an orphan — forgotten, unwanted, alone — return to John 14:18. Jesus' promise was specific: "I will not leave you as orphans." That promise has not expired.
Closing Prayer
Father, thank You for planning, before the world began, to bring us into Your family, not merely to forgive us from a distance.
Son of God, thank You for the cross and the empty tomb, the only way by which we could ever be brought near.
Holy Spirit, thank You for making Your home within us, teaching us, reminding us, and never leaving us as orphans.
Let Your peace, which surpasses understanding, guard our hearts and minds today, and let our lives bear witness to the truth that You have made Your home with us.
And You go even deeper still. Layer by layer, You keep peeling back what hides us from You, drawing us closer, further in, never finished with us, always going further.
That oneness with You is sealed. It is confirmed. And we can rest in it, we can hope in it, and we can affirm it as ours, now and for all eternity. Amen.
In the name of Jesus Christ, we pray. Amen.