The Trinity

Intro

Westminister shorter catechism was developed by the Westminster Assembly in the 1640s, designed to teach fundamental biblical truths to children and new believers in a clear, memorable format. It covers core theological topics like the nature of God, the purpose of humanity, sin, salvation through Jesus Christ, the Ten Commandments, and the Sacraments, serving as a foundational teaching tool for Reformed and Presbyterian churches.To systematically teach essential Christian beliefs, making complex theology accessible for teaching and memorization.

Q. 6. How many persons are there in the Godhead? A. There are three persons in the Godhead; the Father, the Son, and the Holy Ghost; and these three are one God, the same in substance, equal in power and glory.

Call to Worship- Hebrews 12:28–29 “Therefore let us be grateful for receiving a kingdom that cannot be shaken, and thus let us offer to God acceptable worship, with reverence and awe, for our God is a consuming fire.”

What the Trinity Is NOT

(A Middle School–Friendly Guide)

Why This Matters

The Trinity is mysterious, but that doesn’t mean we can believe wrong things about God. Christians have always said:

It’s better to admit mystery than to explain God incorrectly.

The Westminster Confession of Faith (2.3) teaches:

“In the unity of the Godhead there be three Persons, of one substance, power, and eternity: God the Father, God the Son, and God the Holy Ghost.”

This means one God, three Persons, equal and eternal.

The Trinity Is NOT Modalism

(God is not one Person playing three roles)

What Modalism Teaches (Wrong)

God is sometimes the Father

Sometimes the Son

Sometimes the Spirit

Like changing masks or outfits

Why This Is Wrong

The Bible shows the Father, Son, and Spirit existing at the same time.

Example:

Jesus is baptized

The Father speaks from heaven

The Spirit descends like a dove

All three are present together, not taking turns.

Youth-Friendly Summary

God is not pretending to be three different things. He is three Persons at the same time.

Westminster Confession: Each Person is “distinct,”

The Trinity Is NOT Partialism

(God is not made of parts)

What Partialism Teaches (Wrong)

The Father is ⅓ of God

The Son is ⅓ of God

The Spirit is ⅓ of God

Together they make God

Why This Is Wrong

God cannot be divided

Each Person is fully God, not a piece of God

Youth-Friendly Summary

The Father is fully God The Son is fully God The Spirit is fully God But there are not three Gods

Westminster Confession: The Persons are “of one substance”—same divine being.

3. The Trinity Is NOT Three Gods

(This is not tritheism)

What This Would Mean (Wrong)

Three separate gods working together

Like a team of gods

Why This Is Wrong

The Bible is clear:

“The Lord our God, the Lord is one.”

Christianity is monotheistic—we believe in one God.

Youth-Friendly Summary

Christians don’t believe in three gods. We believe in one God who is three Persons.

4. The Trinity Is NOT Like Created Things

(No perfect analogy)

Common Examples That Fall Short

Water as ice, liquid, and steam (modalism)

An egg with shell, yolk, and white (partialism)

A three-leaf clover (partialism)

Why These Fail

God is not created, and created things can’t fully explain Him.

Important Teaching Point: Analogies can help a little—but they can also confuse us if we push them too far.

What the Trinity IS (Short and Clear)

Here’s a statement you can have students repeat:

“God is one in essence and three in Person—Father, Son, and Holy Spirit.”

Or even simpler:

“One God. Three Persons. All fully God.” Trinity

The word Trinity is the name we use to describe God as three Persons: Father, Son, and Holy Spirit. God is one God, but three Persons.

An ancient Christian creed says:

“The Father, the Son, and the Holy Spirit are one in glory, equal in majesty, and eternal.”

Triune

Triune is an adjective that means “three in one.” So when we say, “Our God is Triune,” we mean God is one God in three Persons.

Person

The word Person helps us understand that the Father, Son, and Holy Spirit are not forces or parts of God. Each Person is fully God and relates personally. The Father is not the Son, the Son is not the Spirit, and the Spirit is not the Father—but each is fully God.

Essence / Nature / Substance

These words describe God’s oneness. There are three Persons, but one divine nature. God is one living Being, not three gods.

Ephesians 1:3–14 “Blessed be the God and Father of our Lord Jesus Christ, who has blessed us in Christ with every spiritual blessing in the heavenly places, even as he chose us in him before the foundation of the world, that we should be holy and blameless before him. In love he predestined us for adoption to himself as sons through Jesus Christ, according to the purpose of his will, to the praise of his glorious grace, with which he has blessed us in the Beloved. In him we have redemption through his blood, the forgiveness of our trespasses, according to the riches of his grace, which he lavished upon us, in all wisdom and insight making known to us the mystery of his will, according to his purpose, which he set forth in Christ as a plan for the fullness of time, to unite all things in him, things in heaven and things on earth. In him we have obtained an inheritance, having been predestined according to the purpose of him who works all things according to the counsel of his will, Ephesians 1:12–14 “so that we who were the first to hope in Christ might be to the praise of his glory. In him you also, when you heard the word of truth, the gospel of your salvation, and believed in him, were sealed with the promised Holy Spirit, who is the guarantee of our inheritance until we acquire possession of it, to the praise of his glory.”

Context:

“Ephesians was written by the apostle Paul while he was in prison, around 30 years after Jesus rose from the dead. Paul is writing to Christians living in Ephesus, a city filled with false gods, idols, and confusion about spiritual power. These believers were surrounded by many voices telling them who to trust and how to live. Paul writes this letter to remind them who the true God is and what He has done for them. Before telling them how to live as Christians, Paul begins by praising God and clearly showing that the Father, the Son, and the Holy Spirit are all at work in saving them.”

God the Father (vv. 3–6)

Blesses us

Chooses us before creation

Adopts us as His children

Acts according to His will

God the Son (vv. 7–12)

Redeems us through His blood

Forgives sins

Reveals God’s plan

Unites all things

God the Holy Spirit (vv. 13–14)

Seals believers

Marks us as belonging to God

Guarantees our inheritance

INTERPRET THE TEXT

What Does Paul Mean?

Paul’s Main Point

Paul is showing that salvation is not random or earned. It is the result of the Triune God working together.

Theological Emphasis (Youth-Friendly)

The Father plans salvation

The Son accomplishes salvation

The Spirit applies salvation

Paul wants believers to feel secure, not confused.

Why This Matters in Ephesus

In a city with many gods

Paul says there is one true God

That one God is three Persons

This God is personal, loving, and intentional

Why Does Paul Want Them to Know This?

Paul wants Christians to:

Trust God fully

Salvation doesn’t depend on us holding everything together.

Live confidently

If the Trinity saves us, the Trinity will keep us.

Worship rightly

We don’t worship a vague force—we worship the Father, Son, and Spirit.

“The Trinity is not something we made up—it’s something God revealed. We may not understand everything about God, but we can trust what He has told us about Himself. The Father, the Son, and the Holy Spirit are not parts, masks, or separate gods—they are the one true God who saves us.”