The Indivisible Christ: Foundation and Fulfillment of Ecclesial Unity

The Paradox of Unity in Diversity

In an age where fragmentation seems to be the hallmark of human experience, the Church stands as a profound paradox—a divine institution called to manifest unity amidst diversity. This unity, however, is not a mere human construct or an idealistic aspiration. It is, rather, a reflection of the very nature of God Himself, made manifest in the person and work of Jesus Christ. As we delve into this mystery, we are compelled to ask: How does Christ, as the foundation of the Church, engender and sustain its unity? And how might we, as members of His body, more fully realize and embody this unity in our fractured world?

The Christological Foundation: More Than a Metaphor

When the Apostle Paul declares that “no one can lay a foundation other than that which is laid, which is Jesus Christ” (1 Corinthians 3:11, ESV), he is not merely employing a convenient metaphor. Rather, he is articulating a profound theological truth that goes to the very heart of ecclesiology. Christ is not simply the historical founder of the Church or its primary teacher; He is its very essence, its life-blood, its raison d’être.

To understand this, we must first grapple with the ontological reality of Christ’s relationship to the Church. The Church is not merely an organization that follows Christ’s teachings, but it is, in a very real sense, the extension of His incarnation in time and space. As the hymn so beautifully expresses, “She is His new creation, through water by the Word.” This new creation is not separate from Christ but is intimately united with Him, just as a building is inseparable from its foundation.

The Cornerstone of Unity: Christ as the Nexus of Divine-Human Communion

Expanding on this architectural metaphor, the Apostle Paul, in his letter to the Ephesians, presents Christ not just as the foundation but as the cornerstone of the Church. “Christ Jesus himself being the cornerstone, in whom the whole structure, being joined together, grows into a holy temple in the Lord” (Ephesians 2:20-21, ESV). This imagery is rich with theological significance.

In ancient architecture, the cornerstone was not merely decorative but served a crucial structural function. It was the stone upon which the entire edifice depended for its stability and alignment. Similarly, Christ is not just a historical figure to whom we look back, but the living, active presence that gives the Church its shape, its stability, and its very existence.

Moreover, as cornerstone, Christ serves as the nexus between the divine and the human, between the eternal and the temporal. He is the point at which heaven and earth meet, where God and humanity are reconciled. This reconciliation is not just individual but corporate, forming a new community—the Church—which transcends all human divisions.

The Ecclesial Identity: A Chosen People, A Royal Priesthood

This new community, founded upon and united in Christ, is given a distinct identity. The Apostle Peter describes it in terms that hearken back to Israel’s calling: “But you are a chosen race, a royal priesthood, a holy nation, a people for his own possession, that you may proclaim the excellencies of him who called you out of darkness into his marvelous light” (1 Peter 2:9, ESV).

These descriptors are not mere honorifics but speak to the very essence of the Church’s identity and mission. As a “chosen race,” the Church transcends ethnic and national boundaries, united by a common spiritual lineage in Christ. As a “royal priesthood,” every member of the Church is called to mediate God’s presence to the world and the world’s needs to God. As a “holy nation,” the Church exists as a counter-cultural community, embodying the values and priorities of God’s kingdom.

This identity is not self-generated but is a gift of grace. As Peter reminds us, “Once you were not a people, but now you are God’s people; once you had not received mercy, but now you have received mercy” (1 Peter 2:10, ESV). The Church’s unity, therefore, is not based on human affinity or shared interests but on the gracious action of God in Christ.

The Trinitarian Model: Unity in Diversity

The nature of this unity is further illuminated by Christ’s high priestly prayer in John 17. Here, Jesus prays for a unity among His followers that mirrors the unity within the Godhead: “That they may all be one, just as you, Father, are in me, and I in you, that they also may be in us, so that the world may believe that you have sent me” (John 17:21, ESV).

This Trinitarian model of unity presents us with a profound mystery. The unity of the Church is not uniformity, just as the unity of the Trinity does not negate the distinct personhood of Father, Son, and Holy Spirit. Rather, it is a unity that celebrates diversity while maintaining essential oneness. It is a unity of love, purpose, and mutual indwelling.

This unity is not just an internal reality but has a missional purpose. Jesus prays for this unity “so that the world may believe.” The Church’s unity, therefore, is not an end in itself but a powerful witness to the reconciling work of Christ.

The Historical Challenge: Schisms, Heresies, and the Quest for Unity

The hymn “The Church’s One Foundation” poignantly captures the historical struggles of the Church to maintain this unity: “Long with a scornful wonder, men saw her sore oppressed, by schisms rent asunder, by heresies distressed.” Indeed, the history of the Church is marred by divisions, both doctrinal and practical.

These divisions often arise from a failure to keep Christ as the central focus and foundation. When secondary issues are elevated to primary importance, or when human traditions supersede biblical authority, the unity of the Church suffers. Heresies, by definition, are departures from the truth of Christ, and schisms often result from an inability to maintain unity amid theological diversity.

Yet, as the hymn reminds us, “Saints their watch were keeping, to hail a brighter day.” Throughout history, there have always been those who have recognized the scandal of disunity and have worked tirelessly for the restoration of the Church’s essential oneness in Christ.

The Contemporary Call: Realizing Unity in a Fragmented World

In our current context, the call to unity is perhaps more urgent than ever. In a world fragmented by political polarization, social inequality, and cultural divisions, the Church’s unity in Christ stands as a powerful alternative narrative.

However, this unity cannot be achieved through mere organizational consolidation or doctrinal compromise. True unity must be founded on and flow from Christ. It requires a renewed focus on Christ as the foundation and cornerstone of the Church, a deepened understanding of our identity in Him, and a commitment to embodying the Trinitarian model of unity in diversity.

Practical steps toward this unity might include:

Christocentric theology: Ensuring that all our doctrinal formulations and practical decisions flow from and point to Christ.

Ecumenical dialogue: Engaging in respectful, loving dialogue with other Christian traditions, seeking to understand and learn from one another.

Collaborative mission: Working together across denominational lines to fulfill Christ’s mission in the world.

Spiritual formation: Fostering deep, personal relationships with Christ that transcend cultural and denominational boundaries.

Prophetic witness: Standing together against society’s false teachings, demonstrating the unifying power of the Gospel.

The Ongoing Journey Towards Perfect Unity

As we contemplate the reality of Christ as the foundation of the Church and the source of its unity, we are left with both a comfort and a challenge. The comfort lies in the assurance that our unity is not ultimately dependent on our own efforts but is secured in Christ. The challenge is to more fully realize and manifest this unity in our lived experience as the Church.

The final stanza of our hymn points us toward this ongoing journey: “Back to the one foundation, from sects and creeds made free, come Saints of ev’ry nation to blessed unity.” This is not a call to abandon all distinctives or to ignore real theological differences. Rather, it is an invitation to continually return to Christ, to be ever reformed by His Word and Spirit, and to grow together into the fullness of His stature.

As we do so, we move closer to fulfilling Christ’s prayer “that they may become perfectly one” (John 17:23, ESV). This perfect unity may not be fully realized this side of eternity, but every step toward it is a powerful witness to the world of the transforming love of Christ.

In closing, let us remember that the unity of the Church is not just a theological concept or an ecclesiastical ideal. It is a living reality, grounded in the person of Christ, empowered by the Holy Spirit, and manifested in the love and fellowship of believers. As we continue to explore and embody this unity, may we ever keep our eyes fixed on Christ, the author and perfecter of our faith, the foundation and fulfillment of the Church’s unity.

Blessings, the Downing family

Today’s reflection flowed from this hymn:

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