Please explain the Trinity doctrine biblically

Theology
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I want to approach this topic with humility, patience, and genuine curiosity. I’m not here to argue or create tension—only to understand how we each see Scripture and why.

Most of us agree on the essentials:
Jesus is Lord, the Bible is inspired, and salvation is found only in Him.
Where we differ is in how we understand God’s identity as revealed in Scripture.

Because of that, I’d really appreciate some help from those who hold a Trinitarian view.

I’m trying to understand the doctrine of the Trinity strictly from the Bible itself, without relying on later terminology or philosophical categories. I’m not saying those terms are wrong—I’m simply trying to see whether the doctrine can be explained the same way the apostles explained God.

So I’d love to ask a few questions—not to trap anyone, but to honestly learn how someone who believes in the Trinity understands the Scriptures using the same language the Bible uses.

If you’re willing, here’s what I’m hoping for:

  • A conversation centered on Scripture

  • A calm, thoughtful exchange

  • No assumptions about motives

  • No pressure to “win” anything

  • Just believers seeking clarity together

I truly believe respectful dialogue helps all of us grow.

If anyone is open to it, I’d like to start with a simple question:

“How would you describe the Trinity using only the vocabulary that appears in Scripture?”

I’m asking this sincerely so I can better understand how the early church—and the apostles themselves—would have explained it.

I appreciate anyone willing to discuss this with me in a spirit of grace and truth.

Can you explain the Trinity using only biblical vocabulary, not post-biblical terms?

These are prohibited in response (because they aren’t biblical) :

If the Trinity is an absolute doctrine taught by Scripture then Scripture alone can be shown to support it.

  • Trinity

  • God the Son

  • God the Holy Spirit

  • person

  • essence

  • substance

  • co-equal

  • co-eternal

  • distinct persons

  • eternal Son

  • eternal generation

  • procession

  • hypostasis

  • homoousios

  • perichoresis

  • three beings

  • three centers of consciousness

  • members of the Godhead

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I may not be the best one to explain this. It has been a minute since I last heard or read explanations and reasonings. But this is how I would explain it.

But I believe some key Scriptures might be:

The Gospel of John chapter one talks about Christ as the Word and sets Christ as both One with God and a seperate Person, God being both Father and Son.

1 In the beginning was the Word, and the Word was with God, and the Word was God. **2 **He was with God in the beginning. **3 **Through him all things were made; without him nothing was made that has been made. **4 **In him was life, and that life was the light of all mankind. **5 **The light shines in the darkness, and the darkness has not overcome[a] it.

**14 **The Word became flesh and made his dwelling among us. We have seen his glory, the glory of the one and only Son, who came from the Father, full of grace and truth.

But where as the Father is the Creator Who Speaks things into Existence (That which innitiates Creation and makes the Sound that Creates Life, or phrased another way, the Source of the Sound) …

…Christ is the Sound, begat by the Father, the Spoken Word Itself that echoes out and Creates as it goes forth and gives form to life. And in a similar way, as the Word of God once gave form to all Creation, Christ Himself also goes on to take the form of flesh. And in the flesh, Christ is the embodiment of God’s LOVE for the world, made flesh to physically engage the world and save it. One could say the Word of God was spoken with LOVE, and that Word came with LOVE. It is LOVE.

So the Son is equated as the spoken Word of God, the Word emanating from the Father while the Father is He Who made the sound with intention and purpose.

As John1:18 says,

**18 **No one has ever seen God, but the one and only Son, who is himself God and[b] is in closest relationship with the Father, has made him known.

*I want to talk about the Holy Spirit but I am tired at the moment. I will add more here later to this post*

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There is a plurality in what is called God from the beginning.

Gen_1:26 And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth.

There are four things called truth in the bible, God the Father, God, the Son, God the Holy Spirit, and the word of God.

Divinity is ascribed to all three of these persons at various places. Jesus is even called the “word” of God. Jesus said “if you have seen me, you have seen the Father.”

Trying to take the fragments of references we have and make a cohesive doctrine out of them is difficult for two reasons. First all we have to work with are implications of fragmentary statements. Secondly, we do not have a context or even the capacity to understand celestial arrangements.

Since we look through a glass darkly, we should not be too proud of what little we can understand.

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There is one God:

“Here O Israel, YHWH our God, YHWH is one.” - Deuteronomy 6:4

“I am YHWH and there is no other, there is no god beside Me.” - Isaiah 45:5

One God and Father who made all things

“[There is] one God and Father of all, who is over all, and through all and in all.” - Ephesians 4:6

“there is one God, the Father, from whom are all things“ - 1 Corinthians 8:6

The Father has a Son, through whom all things were made,

“and one Lord, Jesus Christ, through whom are all things“ - 1 Corinthians 8:6

The Father’s Son is God,

“But of the Son He says, ‘Your throne O God is forever and ever’” - Hebrews 1:8

This Son is the Self-same Word who in the beginning was with God, is God, and we see again through Him all things were made

“In the beginning was the Word, and the Word was with God, and the Word was God, He was in the beginning with God. All things that were made were made through Him, and without Him nothing that was made would have been made.” - John 1:1-2

“And the Word became flesh and dwelt among us, and we beheld His glory, the glory of the only-begotten Son of the Father, full of grace and truth.” - John 1:14

Though distinct from His Father, He knows His Father, and can speak of the eternal glory He always had with the Father,

“And now, Father, glorify Me in Your own presence with the glory that I had with You before the world existed.” - John 17:5

For the Father and the Son mutually coinhere,

“Believe Me that I am in the Father and the Father is in Me, or else believe on account of the works themselves.“ - John 14:11

The Son reveals the Father, for no one can see or know God except by His Son

“No one has ever seen God; God the only Son, who is at the Father’s side, he has made him known.” - John 1:18

For the Son is the radiance of the Father’s own glory and imprint of His Hypostasis,

“He is the radiance of the glory of God and the exact imprint of His Hypostasis, and He upholds the universe by the word of His power.” - Hebrews 1:3

The One by whom all things came to exist, all things exist for, for He–the Son Himself–is before all things, upholds all things, and why all things are:

“For by Him all things were created, in heaven and on earth, visible and invisible, whether thrones or dominions or rulers or authorities—all things were created through Him and for Him. And He is before all things, and in Him all things hold together.“ - Colossians 1:16-17

It is only this One, Son and Word of the Father, who took on flesh for our sakes

“The Word became flesh” - John 1:14

“And this holy thing born of you shall be called the Son of God” - Luke 1:35

“Though being by nature God He did not regard equality with God something to exploit, but instead emptied Himself, taking on the form of a slave, born in human likeness” - Philippians 2:6-7

This same Lord Jesus, Son and Word of the Father made flesh, tells us that when He ascends He shall ask the Father, and the Father shall send Another Paraclete,

“And I will ask the Father, and he will give you another Helper, to be with you forever,” - John 14:16

This Paraclete is the Spirit of Truth

“When the Spirit of truth comes, He will guide you into all the truth, for He will not speak on His own authority, but whatever He hears He will speak, and He will declare to you the things that are to come.” - John 16:13

So the Spirit, distinct from Father and the Son, is sent by the Father, but is also sent by the Son

“But when the Helper comes, whom I will send to you from the Father, the Spirit of truth, who proceeds from the Father, He will bear witness about Me.” - John 15:26

This Self-same Spirit is the One who descended upon Christ at His baptism, and simultaneously the voice of the Father spoke from heaven,

“And when Jesus was baptized, immediately He went up from the water, and behold the heavens were opened to Him, and He saw the Spirit of God descending like a dove and coming to rest on Him; and behold, a voice from heaven said, ‘This is My beloved Son, with whom I am well pleased.’” - Matthew 3:16-17

And this Holy Spirit is not an angel or a creature of any kind, nor some impersonal force; but is Himself a Someone, a Divine Someone–He is Himself God

“But Peter said, ‘Ananias, why has Satan filled your heart to lie to the Holy Spirit and to keep back for yourself part of the proceeds of the land? While it remained unsold, did it not remain your own? And after it was sold, was it not at your disposal? Why is it that you have contrived this deed in your heart? You have not lied to man but to God.’” - Acts 5:3-4

This Holy Spirit, proceeding from the Father, who speaks of Christ, who is Himself God, is also the Spirit of God’s Son,

“And because you are sons, God has sent the Spirit of his Son into our hearts, crying, ‘Abba! Father!’” - Galatians 4:6

Indeed Christ Himself would be present, personally, through the Spirit,

“I will not leave you as orphans, I will come to you.” - John 14:18

At this point we are seeing some really important things emerge:

There is only one God, the Father, the Almighty Maker of heaven and earth, of all things seen and unseen.

And one Lord Jesus Christ, only-begotten Son of the Father, through whom all things were made, Who is Himself God with the Father, having known and been with the Father from all eternity as His Son and Word. This Jesus, Son, Word, took on flesh in the womb of Mary, therefore becoming human.

And the Holy Spirit, Lord, Life-Giver, who proceeds from the Father, who with the Father and the Son is worshiped and glorified as God.

One God. Three Persons.
Holy Trinity.

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You do realize there is a much richer depth in the Greek and Hebrew behind the powerful verses you quoted @TheologyNerd ?

J.

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@Johann, There usually is. Though I’d like to think that the biblical material I presented, even in English, is sufficient to provide a basic foundation of Trinitarianism.

The author of the Epistle to the Hebrews when writing that the Son is the imprint of the Father’s “nature” (ESV’s rendering), the Greek uses hypostasis; an important word in Trinitarian dogmatics. The Son presents to us, reveals to us, gives us a way to know the Father in His own Hypostasis–or we might say, His own Person.

The Son is not merely a physical presentation of God, He is in His own Person–and we behold this through His Incarnation–His Father through Him. The Son in His Hypostasis as Son, makes known to us His Father–this becomes even richer when we compare how we ourselves, through adoption and the Spirit are called sons and heirs and thus can call Christ’s Father our Father. He is called Father because He has a Son, and He has always had His Son, He has always been Father–and the Son makes Him known, and in Christ, because of Christ, and by the Spirit we, too, know the Father as Father, able to cry out “Abba! Father!” This could not be unless we too relate to Him as a child to a Father, and this only happens in Christ.

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May God guide you in this endeavor brother, yes much clarity can indeed be gained from communing with our brothers and sisters on this topic, but there is indeed something amiss with pursuing truth on this topic, thus your disclaimer. To me this is a sign that the truth of the trinity is best gained from Him, not to say that the Spirit can’t move through others in the right direction but we’ve all seen the kind of spirit that likes to move on this topic when a heated debate devolves.
It seems that the doctrine of the Trinity is not necessary for salvation otherwise it would have been much more plain in scripture, therefore the evil one is given reign to make us to be at odds with each other over this topic.
I beseech you to ask Him yourself. In quiet prayer, hold the word within your heart that you may discern truth, sit alone for awhile and magnify the presence of the Lord. Imagine Christ next to you, for He surely is, and ask Him, “Lord, are you God? What is the nature of the Trinity?”
This is how I obtained my current outlook, but this is something I am not allowed to share, although I pray that you can have this connection with God as well.
There is much truth that is not in scripture, scripture is very important but remember the Pharisees, they knew the scripture like the back of their hands yet it profited them nothing.
Learning to abide in Christ, for He is the vine that will bring to you all you need to bring forth fruit. The scripture we have brings us to Him so that we may recognize His words when He speaks to us. It is a manual made to help us discern what is the Word of God and what is not. Yes there will be many times when you will be able to verify things with scripture, but at times when you can’t, you must remember that Jesus is right there next to you patiently waiting for you to open your heart to Him that you will hear His words. He is Alive.
May your peace and your blessing be multiplied,
Sincerely,
G

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@The_Omega, I’ll try to take up your challenge to explain the subject biblically. Here are the passages that convinced me of its truth:

Joh 1:1 In the beginning was the Word, and the Word was with God, and the Word was God.
Joh 1:2 He was in the beginning with God.
Joh 1:3 All things were made through him, and without him was not any thing made that was made.

Joh 1:14 And the Word became flesh and dwelt among us, and we have seen his glory, glory as of the only Son from the Father, full of grace and truth.
Joh 1:15 (John bore witness about him, and cried out, “This was he of whom I said, ‘He who comes after me ranks before me, because he was before me.’”)
Joh 1:16 For from his fullness we have all received, grace upon grace.
Joh 1:17 For the law was given through Moses; grace and truth came through Jesus Christ.
Joh 1:18 No one has ever seen God; the only God, who is at the Father’s side, he has made him known.

Joh 1:32 And John bore witness: “I saw the Spirit descend from heaven like a dove, and it remained on him.
Joh 1:33 I myself did not know him, but he who sent me to baptize with water said to me, ‘He on whom you see the Spirit descend and remain, this is he who baptizes with the Holy Spirit.’
Joh 1:34 And I have seen and have borne witness that this is the Son of God.”

Joh 3:13 No one has ascended into heaven except he who descended from heaven, the Son of Man.
Joh 3:14 And as Moses lifted up the serpent in the wilderness, so must the Son of Man be lifted up,
Joh 3:15 that whoever believes in him may have eternal life.

Joh 3:34 For he whom God has sent utters the words of God, for he gives the Spirit without measure.
Joh 3:35 The Father loves the Son and has given all things into his hand.
Joh 3:36 Whoever believes in the Son has eternal life; whoever does not obey the Son shall not see life, but the wrath of God remains on him.

Joh 5:17 But Jesus answered them, “My Father is working until now, and I am working.”
Joh 5:18 This was why the Jews were seeking all the more to kill him, because not only was he breaking the Sabbath, but he was even calling God his own Father, making himself equal with God.
Joh 5:19 So Jesus said to them, “Truly, truly, I say to you, the Son can do nothing of his own accord, but only what he sees the Father doing. For whatever the Father does, that the Son does likewise.
Joh 5:20 For the Father loves the Son and shows him all that he himself is doing. And greater works than these will he show him, so that you may marvel.
Joh 5:21 For as the Father raises the dead and gives them life, so also the Son gives life to whom he will.
Joh 5:22 For the Father judges no one, but has given all judgment to the Son,
Joh 5:23 that all may honor the Son, just as they honor the Father. Whoever does not honor the Son does not honor the Father who sent him.
Joh 6:35 Jesus said to them, “I am the bread of life; whoever comes to me shall not hunger, and whoever believes in me shall never thirst. Joh 6:51 I am the living bread that came down from heaven.

Joh 8:12 Again Jesus spoke to them, saying, “I am the light of the world. Whoever follows me will not walk in darkness, but will have the light of life.”

Joh 10:7 So Jesus again said to them, “Truly, truly, I say to you, I am the door of the sheep.
Joh 10:8 All who came before me are thieves and robbers, but the sheep did not listen to them.
Joh 10:9 I am the door. If anyone enters by me, he will be saved and will go in and out and find pasture.
Joh 10:10 The thief comes only to steal and kill and destroy. I came that they may have life and have it abundantly.
Joh 10:11 I am the good shepherd. The good shepherd lays down his life for the sheep.
Joh 10:14 I am the good shepherd. I know my own and my own know me,
Joh 10:15 just as the Father knows me and I know the Father; and I lay down my life for the sheep.

Joh 10:27 My sheep hear my voice, and I know them, and they follow me.
Joh 10:28 I give them eternal life, and they will never perish, and no one will snatch them out of my hand.
Joh 10:29 My Father, who has given them to me, is greater than all, and no one is able to snatch them out of the Father’s hand.
Joh 10:30 I and the Father are one.”
Joh 10:31 The Jews picked up stones again to stone him.
Joh 10:32 Jesus answered them, “I have shown you many good works from the Father; for which of them are you going to stone me?”
Joh 10:33 The Jews answered him, “It is not for a good work that we are going to stone you but for blasphemy, because you, being a man, make yourself God.”

Joh 11:25 Jesus said to her, “I am the resurrection and the life. Whoever believes in me, though he die, yet shall he live. Joh 11:26 and everyone who lives and believes in me shall never die.

Joh 12:28 Father, glorify your name.” Then a voice came from heaven: “I have glorified it, and I will glorify it again.”

Jesus’ “I am” claims directly identify him with the God of the burning bush:

Exo 3:14 God said to Moses, “I AM WHO I AM.” And he said, “Say this to the people of Israel: ‘I AM has sent me to you.’”
Exo 3:15 God also said to Moses, “Say this to the people of Israel: ‘The LORD, the God of your fathers, the God of Abraham, the God of Isaac, and the God of Jacob, has sent me to you.’ This is my name forever, and thus I am to be remembered throughout all generations.”

Jesus’ claim to be the good Shepherd identifies him directly with David’s divine Shepherd:

Psa 23:1 A Psalm of David. The LORD is my shepherd; I shall not want.

Joh 16:13 When the Spirit of truth comes, he will guide you into all the truth, for he will not speak on his own authority, but whatever he hears he will speak, and he will declare to you the things that are to come.
Joh 16:14 He will glorify me, for he will take what is mine and declare it to you.

Therefore, this evidence in the Bible showed me that the God who had rescued me was 3-in-1, mysteriously.

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The best way to see and understand the way God is built is to look at Genesis 1. But before we’ll go there there are few basic things to agree on. So, according to scriptures God is whole and perfect. God is also love therefore He cannot be alone. perfect love relationship is when the two become one therefore we must assume that God have this kind of love relationship within Him. God was always whole, He is eternal being, therefore He cannot rely on love relationship with people or angels who were created in a certain time (Then before they were created there was no love? doesn’t make sense.)
Now we can go to Genesis and read: “In the beginning God created heavens and earth”. But in Hebrew it doesn’t say Heavens, it is saying: sky. So, is it the physical sky and earth? no. becouse they were not created yet in this point. also time wasn’t created at this point becouse time started to run only when God said: “So the evening and the morning were the first day”.
So, what is this sky and earth God is creating before anything else and before time? well, He is creating the two basic spiritual elements that everything is consist on. These two opposites appeared in scriptures many times each time it have a different name becouse all names are symbolic. these are the two trees in the garden of Eden, these are the two figures on top of the ark of covenant, these are symbolized by the man and the woman that God created saying He made man in God’s image.
In our modern world we can also call them: the plus and the minus. the one is light and life the other is darkness and death.
Now we can move on and read: “The earth was without form, and void; and darkness was on the face of the deep. And the Spirit of God was hovering over the face of the waters.”
We already see here these characteristics of the “earth”: without form, void. darkness, on the face of the deep. But we also see here two more elements: The spirit of God and water (all before everything else was created, before time and space.)
So, these are the 5 elements who are also entities (I can show from scriptures that they are also entities, but not today, becouse it is too long): 1.God the father who made all this and He is beyond any separations. 2.the sky; or the light, or the tree of life. 3. earth, void, chaos 4. spirit of God or Holly spirit. 5. water (It is not at all physical water, I can explain who is the “water” and also who are the rest of the 4 - 3 of them you are already familiar with: The father, The son and the Holly spirit - but again, not today).
Now, if you want, please go to Ezekiel 1 from verse 4 and to Revelation 4 from verse 6, and tell me who are the four creatures that around God? Do you see any confirmation from this description of God to what we saw together in Genesis 1?
God bless. (My name is Yoav)