Alistair Begg: What Is The Truest Thing About Me As a Christian?
Understanding the Deepest Christian Truth: Our Union with Christ
In the journey of faith, many believers seek answers to questions about identity, purpose, and the core meaning of being a Christian. One crucial but often overlooked doctrine is the believer’s union with Christ. This foundational truth isn’t just a theological concept—it holds the power to transform our self-understanding and everyday living. Let’s explore what it truly means to be united with Jesus, and why this is the truest, most life-changing reality for any Christian.
Why Union With Christ Matters
Too often in modern Christian life, we miss the depths of the riches offered to us through our connection to Jesus. The Apostle Paul returns to this theme repeatedly throughout his letters. He describes himself as “a man in Christ,” suggesting that this is not only his deepest identity but the heart of Christian belief itself.
Before encountering the saving work of Jesus, we are, by human nature, “in Adam”—subject to sin, mortality, and separation from God. But in God’s gracious plan, through faith and the working of the Holy Spirit, we are rescued and brought into a new reality: our lives are now “in Christ.” This spiritual relocation changes everything, in the most profound way possible.
Seeing the World Differently: The Lens of Christ
C.S. Lewis once described his faith like this: “I believe in Christianity as I believe the sun has risen, not only because I see it, but because by it I see everything else.” This vivid metaphor captures exactly how union with Christ reshapes a Christian’s perspective. Our identity is no longer determined by circumstances, abilities, or achievements. Instead, our lives are intertwined with the life of Jesus himself.
Paul conveys this truth plainly in his letter to the Galatians: “It is no longer I who live, but Christ who lives in me. And the life I now live in the flesh, I live by faith in the Son of God, who loved me and gave himself for me.” Once this truth grips our hearts, every corner of life—how we work, build relationships, and make choices—comes under the light of Christ’s presence in us.
Identity: Beyond Possessions, Beauty, and Status
Questions about personal identity are as old as humanity itself: “Am I defined by what I own? By how I look? By my intelligence or accomplishments?” The Christian answer, rooted in the doctrine of union with Christ, isn’t to ignore these aspects of our lives, but to place them under a more enduring reality. Whether you excel according to worldly standards or not, if you are in Christ, you have an unshakable identity.
It’s not wrong to value our talents or relationships, but knowing that our ultimate belonging is found in Jesus puts everything else into perspective. Even if popularity, career success, or personal achievements come and go, a Christian’s truest self remains: beloved, accepted, and secure in Christ. This is the anchor amid life’s storms and the quiet confidence when we’re tempted to doubt our worth.
The Transformational Effects of Union with Christ
Understanding that we are united to Christ has real, practical implications for daily living. Paul raises an arresting point in his letters when he challenges believers about moral integrity: Would you join your life with something impure, forgetting that where you go, Christ goes too? If we grasp that Jesus himself indwells us, it brings both encouragement and a call to holy living.
This awareness doesn’t hang over us as a burden, but lifts us up in hope. It’s not simply that we know Jesus, but that he knows us—and, through the Holy Spirit, abides within us. Our union is not a temporary arrangement; it is the fruit of God’s eternal plan, which began before we were born and will carry us into everlasting life.
Relationships Among Believers: Connected in Christ
Another beautiful dimension to our union with Christ is the way it shapes our relationships, especially within the church community. Friendships among believers are more than just social connections; they are spiritual bonds grounded in the shared reality of being “in Christ.” When we are aware of this, we treat one another with greater care, love, and accountability, knowing that we are bound together by the Holy Spirit.
This changes how we support one another, how we resolve conflicts, and how we encourage growth. Our interactions aren’t just horizontal, but always have a vertical axis—grounded in our shared Savior and Lord.
The Eternal Security of Belonging to Jesus
For many, questions about security, assurance, and the future are a source of anxiety. What happens when we fail? What if we face rejection or loss? The miracle of union with Christ offers deep reassurance: we belong to Jesus, and he belongs to us—not just for a season, but forever. This truth undergirds the Christian walk with unspeakable joy and perseverance.
By placing our faith in Christ, we are drawn into a relationship that has its roots in eternity and will last into eternity. Our security isn’t based on our performance, the opinions of others, or even our personal feelings. It is anchored in the unchanging love of God, demonstrated through the cross and resurrection of Christ.
Living Daily From Our True Identity
Understanding and embracing our union with Christ should shape every day. It’s the foundation upon which all Christian living is built—a source of strength when we’re weak, a reminder of purpose when we lose direction, and a protection against the shifting standards of the world.
When faced with challenging circumstances, temptations, or relational struggles, remembering our identity in Christ steadies us. The Christian doesn’t need to scramble for worthiness or achievement to be valued; in God’s eyes, we are already accepted and dearly loved through Jesus.
And as we walk in this reality, our lives become more aligned with God’s heart. Our desires change, our actions reflect Christ’s love
