Who Is God? God Is the Holy Trinity

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Question: Who is God?

Answer: God is the Holy Trinity—Father, Son, and Holy Spirit. Three persons in one God.

May the grace of the Lord Jesus Christ, and the love of God, and the fellowship of the Holy Spirit be with you all. (2 Corinthians 13:14)

The Trinity is one of the most important theological ideas ever. But it gives people panic attacks when they think about it. This lesson will give you the very basics you need to understand what the Trinity is, and why it matters so much.

The basic idea behind the Trinity is this: God is three things, but also still one thing.

God is three persons who have existed for all eternity, are equally powerful, wise,
and good, and who have always depended on each other.

There’s the Father, the Son, and the Spirit, existing in perfect harmony as one God.

How can this be? How can you have three things that exist perfectly together?

Here’s the thing, if you can understand a tiny bit about how music works, you can
understand the basics of the Trinity.

Find a piano. Pick any white key, put your thumb on it. Then skip a white key and put your index finger on the next one. Then skip one more and put your middle finger on the next white key. Now press down your thumb, then index finger, then middle finger. Boom. There’s a harmonic chord. Three distinct sounds all existing in a perfect harmony (watch this video by Jeremy Begbie).

Three things that are also one thing. The threeness and the oneness work
together perfectly. This gives us a picture (or rather a sound) of what God is like.
There is one God (like the one chord) with three persons (like the three notes) all existing in perfect harmony forever.

Now, unlike the chord we just played, which came into being then ceased to exist,
the three persons of the Trinity have always existed. And they’ve always existed in
the relationship of Father, Son, and Holy Spirit. The Father has always been the Father of the Son.(You can’t be a father without a son.) The Son has always been Son to the Father. And they have always been unified by the love of the Spirit.

What this means is that the most basic fact about all reality is loving relationship.
Before there was a world, there was a family: the family of the triune God.

So when you get down to the very bottom of things—to the root of all reality—
there’s love. C. S. Lewis makes this interesting point in Mere Christianity,

All sorts of people are fond of repeating the Christian statement that “God is love.” But, they seem not to notice that the words “God is love” have no real meaning unless God contains at least two Persons. Love is something that one person has for another person. If God was a single person, then before the world was made, He was not love.

The fact that God is perfectly loving requires that God is relational. And the opposite is true as well. The fact that God is relational requires that God is perfectly loving. Here’s why. If God is triune we know that God is love, because you can’t have three people existing for all eternity in harmonious relationship if they aren’t perfectly loving.

Imagine existing for all eternity with your brothers and sisters, or even your friends. Eventually you would get in some fights. But the Father, Son, and Holy Spirit don’t fight. Because God is perfectly loving.

We know God is love because God is a Trinity.
We know God is a Trinity because God is love.

So the Trinity is this perfect, loving relationship that’s always existed. One God in three persons. And because the Trinity is one God, the persons work together in everything they do.

In Matthew 28:19, Jesus said we are baptized in the name of the Father, Son, and
Holy Spirit. The entire Trinity is at work in saving us, so we must name the whole Trinity as we’re made part of Christ’s body through baptism.

And it’s not just baptism, all throughout the story of Jesus we see all three persons
at work. There’s a pattern here. The Father is the source of everything and He sends the Son into the world in the power of the Spirit.

  • We see this in Jesus’ birth. By the Holy Spirit, the Son of God is born into the world (Luke 1:35).
  • We see this in Jesus’ baptism. The Son carries out the mission of the Father in the power of the Spirit (Luke 3:21–23).
  • We see this in Jesus’ blessing of His disciples when He ascends. When the Son goes back to the Father He sends the Spirit to empower us (John 15:26).

Did you detect the pattern? Here it is again.

The Father is the source and goal of our salvation. Jesus is the way. And the Holy Spirit is the power to get there.

Imagine it like this:

  • The Father is the one who says, “Let there be light.”
  • The Son goes and flips on the light switch.
  • The Spirit is the electricity that powers the light bulb.

The Father is the source. The Son is the way. And the Holy Spirit is the power.

Another way of thinking about this is to imagine yourself kneeling to pray the Lord’s
Prayer. We are praying the prayer Jesus taught us. Now imagine Jesus is standing beside you. We begin by praying, “Our Father.” Jesus is helping us to have right relationship with the Father. Now imagine that it’s the Holy Spirit inside you who is giving you the power to pray the prayer Jesus taught us.

The Son beside you. The Father above you. The Spirit inside you. All working to give us a right relationship with God. The Father is the source. The Son is the way. And the Holy Spirit is the power.

All this might seem a bit mysterious and complicated. But the nice thing is that once you start looking for the Trinity, you see it everywhere. For instance, the very words of the Apostle’s Creed are shaped by the Trinity. We begin with the Father (the source), move to the Son (the way), and end with the Spirit and the Spirit’s area of work (empowering the church).

The Father above you. Jesus beside you. The Spirit inside you. There you go. There’s the Trinity.

If you found this entry helpful, you’ll enjoy the illustrated, down to earth catechism called The Absolute Basics of the Christian Faith by Phil Tallon. It’s the perfect little study for: Confirmation classes; Newcomer classes; Families; New Christians. The Absolute Basics of the Christian Faith is a visual introduction to the core beliefs of the Christian faith. While it assumes no background knowledge of the scriptures or church teachings, this eight-week study is stocked with rich explanation and engaging videos that bring catechesis to life for people of all ages, backgrounds, and stops along their spiritual journey. Get the book and video resource from our store here.

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Philip Tallon is an Assistant Professor of Theology at Houston Baptist University, where he is the chair of the Department of Apologetics, and a faculty member of the Honors College. He is the author of The Poetics of Evil:Toward an Aesthetic Theodicy and co-editor of The Philosophy of Sherlock Holmes (with David Baggett). He also has a new book coming out from Seedbed, The Absolute Basics of the Christian Faith. You can find him on Twitter: @philiptallon.

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