Paul’s Greatest Contribution to Christian Theology
by Reiner Kremer
If there is one phrase that unlocks the theology of the Apostle Paul, it is the simple Greek expression ἐν Χριστῷ—en Christō—meaning “in Christ.”
Paul uses this expression, and closely related forms such as “in Him,” “in the Lord,” and “with Christ,” well over 150 times throughout his letters. This repetition is not accidental. It is Paul’s way of describing the believer’s new reality after responding to the invitation of Jesus.
Jesus proclaimed the Kingdom of God.
Paul explains what life inside that Kingdom looks like.
Jesus called people to follow Him.
Paul explains what happens when they do.
Jesus invited people into a living relationship with Himself.
Paul unfolds the astonishing implications of that relationship.
To understand Paul’s theology, we must first understand Jesus.
Everything Paul teaches grows from the words and work of Christ.
The Kingdom Begins with Union, Not Geography
When Jesus announced,
“The kingdom of God is at hand” (Mark 1:15),
many expected a political revolution.
Instead, Jesus described a kingdom unlike any earthly empire.
He said,
“The kingdom of God is within you,” or, as many scholars translate it, “the kingdom of God is in your midst” (Luke 17:21).
God’s reign begins wherever Christ is welcomed as King.
This is precisely where Paul begins.
Rather than asking, “Where is God’s Kingdom?” Paul asks,
“Who are you united to?”
If you are in Adam, you belong to the old creation.
If you are in Christ, you belong to the new creation.
This echoes Paul’s contrast in Romans 5 and 1 Corinthians 15. Adam represents humanity’s rebellion, mortality, and alienation. Christ, the “last Adam,” represents a restored humanity marked by obedience, life, and reconciliation. The decisive question is no longer merely, “What have you done?” but “To whom do you belong?”
Christianity is not first about changing locations.
It is about entering a new covenant relationship.
The Kingdom begins wherever Christ reigns in the heart.
“Abide in Me” and “In Christ”
Perhaps nowhere do Jesus and Paul speak more beautifully together than in John 15.
Jesus says,
“Abide in Me, and I in you.”
The image is simple.
A vine.
Branches.
One continuous source of life.
Branches possess no independent life.
Everything comes from the vine.
The sap flows continually.
Life flows continually.
Fruit grows continually.
Paul simply develops this same truth using different language.
Instead of saying,
“Abide in Me,”
Paul says,
“You are in Christ.”
Jesus describes the relationship using an agricultural picture.
Paul describes the same relationship using covenant language.
Both describe an intimate, living union with the Savior.
Notice what Jesus does not say.
He does not say,
“Visit Me occasionally.”
Nor,
“Remember Me when convenient.”
He says,
Remain.
Abide.
Continue.
Live in constant dependence.
Paul agrees completely.
For him, every spiritual blessing comes only because believers are united with Christ.
Salvation is therefore not merely receiving gifts from Jesus.
It is receiving life in Jesus.
Every Spiritual Blessing Is Found in Christ
Listen carefully to the opening chapter of Ephesians.
Again and again Paul repeats the same phrase.
“In Christ…”
“In Him…”
“In the Beloved…”
Blessed…
Chosen…
Adopted…
Redeemed…
Forgiven…
Given an inheritance…
Sealed with the Holy Spirit.
Notice something remarkable.
Paul never says these blessings originate in our goodness.
Or our performance.
Or even our faith itself.
Every blessing flows from Christ Himself.
Faith is simply the open hand that receives what God has already accomplished through His Son.
This is why assurance is never rooted in ourselves.
It is rooted in Jesus.
The question is not,
“Am I strong enough?”
The question is,
“Is Christ sufficient?”
Paul’s answer is unequivocal.
Yes.
Always.
Sharing Christ’s Story
One of Paul’s most breathtaking ideas is that believers actually participate in Christ’s own story.
Romans 6 tells us we were buried with Christ in baptism.
Raised with Christ into new life.
Ephesians 2 goes even further.
Paul writes that God
“made us alive together with Christ… raised us up together, and made us sit together in the heavenly places in Christ Jesus.”
Notice the verbs.
Made alive.
Raised.
Seated.
Most Christians think of these as future promises.
Paul presents them as present realities with future fulfillment.
Spiritually speaking, believers already participate in Christ’s resurrection life.
Already share His victory.
Already belong to His Kingdom.
Already have access to the Father.
Already possess eternal life.
This does not mean suffering disappears.
Far from it.
Paul wrote these words while enduring imprisonment, persecution, and hardship.
His circumstances remained difficult.
His position in Christ remained secure.
This is why Christians can experience profound peace even amid suffering.
Our lives are hidden with Christ in God.
Assurance Without Presumption
One of the beautiful distinctives of the Seventh-day Adventist understanding of salvation is that assurance rests in a living relationship with Jesus rather than in a one-time decision detached from ongoing faith.
The New Testament consistently portrays salvation as dynamic—a life of abiding, trusting, growing, and persevering in Christ.
Jesus says,
“Abide in Me.”
Paul says,
“Walk in Christ.”
Both reject two opposite errors.
One is despair:
“I can never be good enough.”
The other is presumption:
“I no longer need Christ.”
The gospel offers neither hopeless striving nor careless confidence.
Instead, it offers daily dependence.
Every morning we begin again.
Every day we receive grace again.
Every day Christ lives His life through us.
Sanctification, then, is not primarily about trying harder.
It is about remaining closer.
As we behold Christ, we are transformed into His likeness by the Holy Spirit. Obedience is the fruit of communion, not its substitute.
“In Christ” and the Great Controversy
For Seventh-day Adventists, the Great Controversy is more than a conflict over power.
It is a conflict over the character of God.
Satan has charged that God’s government is arbitrary, His law impossible to keep, and His love ultimately self-serving.
Jesus answered those accusations by His life, His death, and His resurrection.
Paul shows that believers participate in that witness.
The church is not merely a gathering of forgiven sinners.
It is a living demonstration of what God’s grace can accomplish in surrendered human lives.
Ephesians 3 declares that through the church the manifold wisdom of God is made known even to the heavenly powers.
This is extraordinary.
Our transformed lives become part of God’s answer to the accusations raised in the cosmic conflict.
As Christ’s love reshapes us, the universe sees the truth about God’s character displayed in redeemed humanity.
Living Today in the Light of the Second Coming
Adventists rightly treasure the promise of Christ’s visible return.
The Second Coming is our blessed hope.
It is the day when faith becomes sight.
When death is swallowed up in victory.
When creation itself is renewed.
Yet Paul reminds us that the future has already begun.
Because we are in Christ,
we already belong to the coming Kingdom.
We already possess eternal life in its present dimension.
We already experience reconciliation with God.
We already live under Christ’s lordship.
The Second Coming does not create our union with Christ.
It reveals it in glory.
When Jesus appears, He is not coming to meet strangers.
He is coming for those who have already learned to abide in Him.
Those who have walked with Him in ordinary days will rejoice when they see Him face to face.
This is why Christian hope is never escapism.
It is participation.
The Kingdom has already been inaugurated through Christ’s first coming.
It will be consummated at His second.
Between those two great events, believers are called to live every day in Christ.
Closing Reflection
Perhaps this is Paul’s greatest message to our anxious generation.
Your identity is not determined by your failures.
Or your successes.
Or your political party.
Or your income.
Or your fears.
Or even your past.
If you belong to Jesus Christ, then your deepest identity is wonderfully simple.
You are in Christ.
And because you are in Him,
you are loved with the Father’s everlasting love.
You are accepted through His righteousness.
You are empowered by His Spirit.
You are being transformed into His likeness.
And you are already a citizen of the Kingdom that will one day fill the whole earth when Christ returns in glory.
This is not merely a future promise.
It is a present reality.
It is the life that Jesus invited us into when He said,
“Abide in Me.”
And it is the life Paul spent the rest of his ministry proclaiming—
the glorious mystery of Christ in us, and we in Him, the hope of glory.
The Covenant Mystery: Corporate Personality and the Sanctuary Story
How Adam, Israel, Christ, the Church, and the New Creation Reveal God’s Eternal Purpose
To fully understand Paul’s phrase “in Christ,” we must understand two foundational biblical ideas:
- Corporate Personality — how God works through covenant representatives who include and represent their people.
- The Temple/Sanctuary Motif — how God’s desire to dwell with humanity unfolds from Eden to the New Jerusalem.
Together these themes reveal that salvation is not merely about individuals being rescued from sin.
It is about God restoring a covenant family, renewing His dwelling place, and bringing all creation back under the loving reign of Christ.
The gospel is not a smaller story within the Bible.
The gospel is the story of the entire Bible.
Part One — Corporate Personality: One Represents Many
Modern Western thinking often emphasizes the individual.
My choices.
My identity.
My destiny.
The Bible certainly values each person before God. Jesus loves individuals. He calls people by name. He seeks the lost sheep, the lost coin, and the lost son.
Yet biblical covenant thinking also includes a powerful concept called corporate personality.
In Scripture, individuals can represent communities, and communities can share in the identity and destiny of their representative.
This idea is essential for understanding Paul.
Without it, statements like these become difficult to comprehend:
“For as in Adam all die, even so in Christ all shall be made alive.”
— 1 Corinthians 15:22
And:
“For you died, and your life is hidden with Christ in God.”
— Colossians 3:3
And:
“God… raised us up together, and made us sit together in the heavenly places in Christ Jesus.”
— Ephesians 2:6
How can believers have died, risen, and been seated with Christ when they were not physically present at Calvary, the resurrection, or the ascension?
The answer is covenant representation.
Christ does not merely act for His people.
He acts as His people.
Adam: Humanity’s First Representative
The story begins in Genesis.
Adam is not merely one man among billions.
He is humanity’s covenant head.
His actions affect the entire human family.
Paul explains:
“Through one man sin entered the world, and death through sin, and thus death spread to all men.”
— Romans 5:12
Adam’s failure introduces humanity into a condition of sin and death.
Humanity becomes “in Adam.”
This does not mean God unfairly blames individuals for Adam’s personal choice. Rather, Paul is explaining the universal human condition. Humanity inherited a broken relationship with God, a corrupted nature, and a world enslaved to death.
But Paul’s argument does not end with Adam.
Adam is only the first representative.
A greater Representative has come.
Abraham: The Father of a Covenant Family
God’s response to humanity’s failure is the calling of Abraham.
Through Abraham, God creates a covenant family whose purpose is to bless all nations.
God says:
“In you all the families of the earth shall be blessed.”
— Genesis 12:3
Abraham represents a new humanity of faith.
Paul explains that those who belong to Christ become Abraham’s offspring:
“If you are Christ’s, then you are Abraham’s seed, and heirs according to the promise.”
— Galatians 3:29
The promise was never ultimately about ancestry.
It was about belonging.
Through Christ, people from every nation become part of God’s covenant family.
Israel: The Son Who Was Called to Represent Humanity
Israel’s story repeats and expands the Adam story.
Israel is called God’s “son”:
“Israel is My son, My firstborn.”
— Exodus 4:22
Like Adam, Israel is placed in God’s presence.
Like Adam, Israel is given a vocation.
Like Adam, Israel is tested.
And like Adam, Israel often fails.
But the prophets begin pointing toward a faithful Israelite who will succeed where others failed.
Isaiah speaks of the Servant who will fulfill Israel’s mission and bring salvation to the nations.
The Messiah will not merely save Israel.
He will become the representative of humanity itself.
Christ: The Second Adam and Faithful Representative
This is the heart of Paul’s theology.
Jesus is not merely someone who saves us from a distance.
He enters our humanity.
He becomes the new Adam.
Where Adam failed, Jesus succeeds.
Adam was tested in a garden and chose disobedience.
Jesus was tested in a wilderness and chose obedience.
Adam grasped at equality with God.
Jesus humbled Himself and became obedient unto death.
Paul writes:
“The first man Adam became a living being. The last Adam became a life-giving spirit.”
— 1 Corinthians 15:45
Christ takes humanity’s story upon Himself.
He carries our sin.
He experiences our death.
He defeats our enemy.
He rises victorious.
And because He represents us, His victory becomes our victory.
This is why Paul can say:
“I have been crucified with Christ; it is no longer I who live, but Christ lives in me.”
— Galatians 2:20
The believer’s salvation is not merely imitation of Jesus.
It is participation in Jesus.
The Church: A New Humanity in Christ
Ephesians 2 contains one of Paul’s greatest statements about the church.
Christ has broken down the dividing wall between Jew and Gentile and created:
“one new man from the two, thus making peace.”
— Ephesians 2:15
The church is not merely a collection of forgiven individuals.
It is a new humanity formed around Christ.
The church exists because believers share in the identity of their Representative.
United to Christ:
His death becomes our death to sin.
His resurrection becomes our new life.
His ascension becomes our spiritual position before God.
His inheritance becomes our inheritance.
His relationship with the Father becomes our adopted relationship.
This is why Paul can write:
“You are all sons of God through faith in Christ Jesus.”
— Galatians 3:26
The gospel is adoption into the family of God through union with the Son of God.
Part Two — The Temple and Sanctuary Story:
Eden → Tabernacle → Temple → Christ → Church → New Jerusalem
The sanctuary theme is one of the greatest unifying threads in Scripture.
The Bible begins with God dwelling with humanity.
It ends with God dwelling with humanity.
Everything between those two realities tells the story of restoration.
Eden: The First Sanctuary
Before there was a tabernacle, there was Eden.
Genesis presents Eden as sacred space.
God walks with humanity.
His presence fills creation.
The garden contains imagery later associated with the sanctuary:
- cherubim
- sacred space
- the tree of life
- God’s presence
- priestly responsibility
Adam and Eve are placed as representatives to serve and guard God’s creation.
Humanity’s original calling was priestly.
The earth was intended to become filled with God’s glory.
Sin interrupted this mission.
Humanity is expelled from God’s presence.
But God’s purpose does not change.
He begins the work of restoration.
Tabernacle: God Dwells Among His People
After the Exodus, God gives Israel the sanctuary.
The purpose is stated clearly:
“Let them make Me a sanctuary, that I may dwell among them.”
— Exodus 25:8
The sanctuary is not primarily about rituals.
It is about restored relationship.
God creates a place where heaven and earth meet.
The sanctuary proclaims:
God is holy.
Sin separates.
Grace provides a way back.
The sacrifices point forward to Christ.
The priesthood points forward to Christ.
The entire sanctuary system anticipates Christ.
Temple: God’s Presence in the Kingdom
The temple expands the sanctuary vision.
Israel’s king rules under God’s authority.
The temple becomes the center of worship and the symbol of God’s kingdom.
Yet Israel’s failure reveals a deeper truth:
The problem is not merely geography.
The problem is the human heart.
A better temple is needed.
A better priest is needed.
A better sacrifice is needed.
A better King is needed.
Christ: The True Temple
John makes the astonishing declaration:
“The Word became flesh and dwelt among us.”
— John 1:14
The Greek word translated “dwelt” literally carries the idea of “tabernacled.”
Jesus is the ultimate sanctuary.
God no longer meets humanity through a building.
God comes personally.
Jesus says:
“Destroy this temple, and in three days I will raise it up.”
— John 2:19
John explains that Jesus was speaking about His body.
Christ is:
The Temple.
The Priest.
The Sacrifice.
The Presence of God among humanity.
The Church: A Living Temple
Because believers are united with Christ, they become part of God’s dwelling place.
Paul writes:
“You are the temple of the living God.”
— 2 Corinthians 6:16
And:
“You also are being built together for a dwelling place of God in the Spirit.”
— Ephesians 2:22
The church does not replace Christ.
The church participates in Christ.
Because Christ is the true Temple, His people become a temple community.
God’s presence is displayed through a redeemed people.
New Jerusalem: The Sanctuary Completed
The Bible ends with the fulfillment of everything Eden promised.
John declares:
“I heard a loud voice from heaven saying, ‘Behold, the tabernacle of God is with men, and He will dwell with them.'”
— Revelation 21:3
Notice what is absent:
No temple building.
Why?
Because:
“The Lord God Almighty and the Lamb are its temple.”
— Revelation 21:22
The entire creation becomes God’s dwelling place.
The sanctuary mission is complete.
Heaven and earth are united.
Humanity is restored.
The image of God is renewed.
The Kingdom of God fills creation.
The Unified Story: Christ at the Center
Now the entire biblical narrative comes together.
Adam
Humanity loses covenant identity and God’s presence.
Abraham
God promises a family through whom all nations will be blessed.
Israel
God creates a covenant people and reveals redemption through sanctuary and priesthood.
Christ
The Second Adam succeeds where Adam failed, fulfills Israel’s mission, becomes the true Temple, and restores humanity.
Church
Those united to Christ become God’s adopted family and living temple.
New Creation
God’s original purpose is completed as He dwells forever with His redeemed children.
This is why Paul says:
“According to His good pleasure which He purposed in Himself, that in the dispensation of the fullness of the times He might gather together in one all things in Christ.”
— Ephesians 1:9–10
The entire universe is being brought back into harmony through Jesus.
The Kingdom.
The covenant.
The sanctuary.
The Great Controversy.
The Second Coming.
The resurrection.
The New Earth.
They are not separate doctrines.
They are chapters of one story.
And the central figure of that story is Jesus Christ.
To be in Christ is to become part of the restoration God began in Eden, promised through Abraham, revealed through Israel, accomplished through Jesus, and completed in the New Creation.
The final message of Scripture is not merely:
“God will rescue us from this world.”
It is:
“God will restore what sin destroyed.”
And at the center of that restoration stands the Lamb who became King.
Jesus Christ.
Even so, come Lord Jesus!


Article
Does the Bible Teach Annihilationism or Eternal Conscious Torment? A Step-By-Step Journey Through Scripture
Christian movements, church leaders, and students of Scripture clash over all sorts of doctrines, but perhaps no subject is more contentious, more...
Christian movements, church leaders, and students of Scripture clash over all sorts of doctrines, but perhaps no subject...