The Holy Trinity: Who Are the Father, Son, and Holy Spirit?
A biblical breakdown of the Trinity, the deity of Christ, the Holy Spirit, and why Christians believe in one God revealed as Father, Son, and Holy Spirit.
When I was saved in 2023, one of the first things I had to accept was that the Holy Bible was truly the Word of God.
And along with that came a doctrine that, at the time, made absolutely no sense to me:
The Trinity.
How could Jesus be a man and also be God?
How could the Father be God, Jesus be God, and the Holy Spirit be God without Christianity teaching three gods?
My brain could not wrap around it.
So if you are reading this and thinking, “I believe God, but I do not understand how this Trinity thing works,” I understand.
My prayer is not that this article answers every question you could ever have about the Trinity. Entire books have been written about this doctrine.
My goal is simpler:
I want to show you where Christians get the doctrine from Scripture and give you a foundation that makes these passages easier to understand as you continue studying for yourself.
First: What Do Christians Mean by “The Trinity”?
Before we start pulling verses together, we need to define what we are actually claiming.
There is one God.
The Father is God.
The Son is God.
The Holy Spirit is God.
The Father is not the Son.
The Son is not the Holy Spirit.
The Holy Spirit is not the Father.
Yet Christianity does not teach three gods.
It teaches one God who eternally exists as three distinct Persons.
The Father, Son, and Holy Spirit are not each one-third of God.
Each is fully divine.
They are distinct in Person, yet one in divine essence.
That is the doctrine of the Trinity.
What About the Sun, Light, and Heat Analogy?
When I was first trying to understand this, one illustration helped me picture distinction.
Think about the sun.
The sun itself.
The light coming from it.
The heat we experience from it.
They are distinguishable, yet connected.
That can help us begin to understand why Christians can speak about the Father, Son, and Holy Spirit distinctly without talking about three unrelated gods.
But there is an important warning:
No created analogy perfectly explains the Trinity.
The Father is not merely one “part” of God while Jesus and the Holy Spirit make up the remaining parts.
Jesus is not simply a beam coming off the Father.
And the Holy Spirit is not merely an impersonal force or sensation.
The analogy can help us picture distinction, but Scripture has to define God for us.
1. Scripture Teaches That There Is One God
The Trinity does not begin by saying there are three gods.
It begins with the same truth Scripture teaches repeatedly:
God is one.
Deuteronomy 6:4 says:
“Hear, O Israel! The LORD is our God, the LORD is one!”
DEUTERONOMY 6:4 • NASB 1995
Christianity is monotheistic.
The question is not whether there is one God.
The question is:
2. Jesus Christ Is Fully God
One of the clearest places to begin is John 1.
John 1:1–3 says:
“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 came into being through Him, and apart from Him nothing came into being that has come into being.”
JOHN 1:1–3 • NASB 1995
Slow down and look at what John says.
The Word was with God.
That shows distinction.
The Word was God.
That shows deity.
John does not say the Word became God.
The Word already was God in the beginning.
Then verse 3 tells us that creation came into being through Him.
And just in case there is any confusion about who “the Word” is, John tells us in verse 14:
“And the Word became flesh, and dwelt among us, and we saw His glory, glory as of the only begotten from the Father, full of grace and truth.”
JOHN 1:14 • NASB 1995
Now put those truths together:
The Word was with God.
The Word was God.
The Word became flesh.
John is speaking about Jesus Christ.
Jesus did not begin existing when Mary gave birth to Him.
The eternal Son took on human nature.
Jesus Was Fully God and Fully Man
Christianity does not teach that Jesus was half God and half man.
It teaches that Jesus is fully God and fully human.
The eternal Son did not stop being God when He became human.
Hebrews 2:9 says:
“But we do see Him who was made for a little while lower than the angels, namely, Jesus, because of the suffering of death crowned with glory and honor…”
HEBREWS 2:9 • NASB 1995
This is describing His incarnation and humiliation.
It does not mean Jesus stopped being divine.
It means the Son truly entered our human condition.
He experienced hunger, pain, temptation, suffering, and death.
Yet He remained who He eternally was.
3. What About John 17:3?
One passage people sometimes use against the deity of Christ is John 17:3.
Jesus prays to the Father:
“This is eternal life, that they may know You, the only true God, and Jesus Christ whom You have sent.”
JOHN 17:3 • NASB 1995
Someone might isolate that verse and say:
“See? Jesus called the Father the only true God, so Jesus cannot be God.”
But we cannot isolate one sentence from the rest of John's Gospel or even from the rest of the prayer.
Just two verses later, Jesus says:
“Now, Father, glorify Me together with Yourself, with the glory which I had with You before the world was.”
JOHN 17:5 • NASB 1995
That is an extraordinary statement.
Jesus speaks about sharing glory with the Father before the world existed.
He is describing a relationship with the Father that existed before creation.
That fits perfectly with John 1:
John 17:3 is not Jesus denying His own deity.
It distinguishes Jesus the Son from the Father while maintaining the relationship that existed between them before creation.
4. Jesus Is Explicitly Called God Elsewhere
John 1 is not standing alone.
After Jesus' resurrection, Thomas sees Him and declares:
“My Lord and my God!”
JOHN 20:28 • NASB 1995
Jesus does not correct him.
Titus 2:13 speaks of:
“…our great God and Savior, Christ Jesus.”
TITUS 2:13 • NASB 1995
Hebrews 1:8 says of the Son:
“But of the Son He says, ‘YOUR THRONE, O GOD, IS FOREVER AND EVER…’”
HEBREWS 1:8 • NASB 1995
So the deity of Christ is not built on one mysterious sentence.
It is woven throughout the New Testament.
5. The Holy Spirit Is Not Just a Force
Sometimes people understand the Father as God and eventually understand Jesus as God, but they think of the Holy Spirit differently.
Maybe like God's energy.
His power.
His influence.
But Scripture speaks about the Holy Spirit personally.
Jesus says:
“But the Helper, the Holy Spirit, whom the Father will send in My name, He will teach you all things, and bring to your remembrance all that I said to you.”
JOHN 14:26 • NASB 1995
Notice the language.
He will teach you.
The Holy Spirit teaches.
He is not presented as an impersonal power source.
6. Scripture Identifies the Holy Spirit With God
One of the clearest passages is Acts 5.
Peter confronts Ananias and says:
“Ananias, why has Satan filled your heart to lie to the Holy Spirit…”
ACTS 5:3 • NASB 1995
Then Peter continues:
“…You have not lied to men but to God.”
ACTS 5:4 • NASB 1995
Peter describes lying to the Holy Spirit as lying to God.
That is enormously important.
7. The Holy Spirit Was Promised Long Before Pentecost
The Holy Spirit does not suddenly appear for the first time in Acts.
We see the Spirit of God throughout the Old Testament.
Joel 2:28–29 contains God's promise:
“It will come about after this that I will pour out My Spirit on all mankind; and your sons and daughters will prophesy, your old men will dream dreams, your young men will see visions. Even on the male and female servants I will pour out My Spirit in those days.”
JOEL 2:28–29 • NASB 1995
That prophecy becomes extremely important in Acts 2.
When the Holy Spirit is poured out at Pentecost, Peter quotes Joel 2:28–32 in Acts 2:17–21 and explains what they are witnessing in light of what God had spoken through Joel.
The Old Testament also contains passages such as:
All of them contribute to the biblical picture of God's Spirit working among His people.
8. Jesus Promised the Holy Spirit
Before His crucifixion, Jesus prepares His disciples for His departure.
“But the Helper, the Holy Spirit, whom the Father will send in My name, He will teach you all things, and bring to your remembrance all that I said to you.”
JOHN 14:26 • NASB 1995
Look at all three Persons in that sentence.
The Father sends.
The Son's name is involved.
The Holy Spirit comes.
They are distinguishable.
And yet they are working together.
Acts 1:8 says:
“But you will receive power when the Holy Spirit has come upon you; and you shall be My witnesses…”
ACTS 1:8 • NASB 1995
Ephesians 1:13–14 also teaches that believers are sealed with the promised Holy Spirit as a pledge of our inheritance.
The Holy Spirit is not an optional side subject in Christianity.
9. One of the Clearest Pictures of the Trinity
If someone asked me for one scene where they can see the distinction between Father, Son, and Holy Spirit at the same time, I would take them to Jesus' baptism.
Matthew 3:16–17 describes Jesus being baptized, the Spirit of God descending, and the Father speaking from heaven:
“This is My beloved Son, in whom I am well-pleased.”
MATTHEW 3:17 • NASB 1995
Look at the scene.
The Son is being baptized.
The Spirit descends.
The Father speaks from heaven.
They are interacting with one another.
They are distinct Persons.
10. Then Jesus Gives Us the Trinitarian Formula
After His resurrection, Jesus commands His disciples:
“Go therefore and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit.”
MATTHEW 28:19 • NASB 1995
Notice something fascinating.
Jesus does not say:
“in the names.”
He says:
“in the name”
Singular.
Then He identifies:
The Father.
The Son.
The Holy Spirit.
This is one God and three distinct Persons appearing together in one of Christianity's foundational commands.
So, Is the Word “Trinity” in the Bible?
No.
You will not open your Bible and find a verse that says:
“God is a Trinity.”
But that does not mean the doctrine was invented outside Scripture.
“Trinity” is a theological word Christians use to summarize everything Scripture reveals about God.
There is one God.
The Father is God.
The Son is God.
The Holy Spirit is God.
The Father, Son, and Holy Spirit are distinct from one another.
And Scripture still insists that there is only one God.
That is what Christians mean by the Trinity.
We Do Not Have to Pretend It Is Simple
Sometimes Christians become uncomfortable admitting:
The Trinity is difficult to fully comprehend.
But difficult to comprehend does not mean contradictory.
If God is truly God, I do not expect His entire nature to fit comfortably inside the limits of my mind.
I can understand what Scripture reveals without claiming I can explain every mystery of God's being.
There is a difference between saying:
“I cannot understand anything about this.”
and:
“I cannot exhaustively comprehend everything about this.”
Scripture gives us enough to know what we are affirming, even if God's nature remains greater than our ability to fully grasp it.
The Father Is God. The Son Is God. The Holy Spirit Is God.
And yet:
There is one God.
Not three gods.
Not one Person wearing three masks.
Not God divided into three pieces.
That is why Christians can worship Jesus without believing they are worshiping somebody other than God.
It is why the Holy Spirit can dwell within believers and still be called God's Spirit.
It is why Jesus can speak to the Father without disproving His own deity.
The distinctions are real.
And the unity is real.
My Final Advice: Study It for Yourself
Please do not use this article as the end of your study.
Use it as the beginning.
There are far more passages concerning the Father, Son, and Holy Spirit than I could reasonably cover here.
Open the Scriptures.
Read the passages in context.
Compare them.
Ask questions.
Pray.
And do not be afraid of something simply because it takes time to understand.
I once sat where some of you may be sitting now.
“How can Jesus be God?”
“How can the Father and Jesus both be God?”
“Where does the Holy Spirit fit into all of this?”
Those are fair questions.
And you do not have to run away from them.
Take them to Scripture.
Because Christianity does not ask us to believe in the Trinity because somebody made up a complicated doctrine centuries later.
Christians believe in the Trinity because when we allow all of Scripture to speak, we are confronted with a God who has revealed Himself as Father, Son, and Holy Spirit.
Scripture over culture. Truth over comfort. Christ over everything.
And as always, I hope this helps you today.