Acts 20:28 – Proof of Christ’s Divinity and the Apostolic Authority of the Catholic Church

Discover how Acts 20:28 proves Christ’s divinity and the authority of the Catholic Church through apostolic succession. Backed by Scripture, CCC, and the Church Fathers.

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📖 Introduction

One of the most powerful passages that affirm both the divinity of Christ and the authority of the Catholic Church is found in Acts 20:28. This verse not only proclaims that the Church belongs to God, but also that it was purchased by His own blood, a direct reference to Jesus Christ’s sacrifice on the Cross.

Many sects, such as the Iglesia ni Cristo (INC), deny the divinity of Christ and claim that He is a mere man. Likewise, Protestant groups often reject the Catholic Church’s authority, teaching instead that the Bible alone is sufficient (sola scriptura). Yet Acts 20:28 presents a challenge to both claims.

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📜 The Biblical Text: Acts 20:28

“Take heed to yourselves and to all the flock, in which the Holy Spirit has made you overseers, to care for the Church of God which He obtained with His own blood.” (RSV-CE)

Key Points in the Verse

1. “The Holy Spirit made you overseers” → Apostolic succession is divinely instituted.

2. “To shepherd the Church of God” → The Church is not man-made; it belongs to God.

3. “Purchased with His own blood” → God Himself shed blood, proving that Christ is God.

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✝️ Evidence of Christ’s Divinity

The phrase “the Church of God, which He obtained with His own blood” leaves no room for doubt:

• God has no blood as pure spirit, but Christ, who is true God and true man, shed His blood on the Cross.

• Therefore, Christ is not just man but God Incarnate.

Supporting Scriptures

• John 1:1, 14 – “The Word was God… and the Word became flesh.”

• Colossians 1:15-20 – Christ is the image of the invisible God, in whom all things hold together.

• John 20:28 – Thomas declares to Jesus: “My Lord and my God.”

This is contrary to the INC teaching that Christ is only a human being. Acts 20:28 clearly states that the blood shed on Calvary is the blood of God Himself in the person of Jesus Christ.

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⛪ Apostolic Authority and the Church

Paul addresses the elders/bishops of Ephesus, reminding them that the Holy Spirit has appointed them as shepherds of the Church. This reveals the structure of early Church governance:

• The Church is not independent local assemblies, but one flock under divinely instituted shepherds.

• Authority comes from the Holy Spirit, not from personal interpretation.

CCC References

• CCC 874 – Christ instituted the Church’s ministry for shepherding His people.

• CCC 1558 – Bishops, as successors of the apostles, are entrusted with the task of shepherding the Church.

• CCC 816 – The one Church of Christ subsists in the Catholic Church governed by the successor of Peter.

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🏛 Witness of the Early Church Fathers

The Fathers consistently affirm both Christ’s divinity and the authority of the Church:

• St. Ignatius of Antioch (c. 110 AD): “Be eager to do everything in godly harmony, with the bishop presiding in the place of God, and the presbyters in the place of the apostles.” (Letter to the Magnesians, 6)

• St. Augustine (354–430 AD): “See whose blood was given for it: value how great a price was paid. The blood of Christ is the price of the Church.” (Sermon 214)

• St. Irenaeus (c. 180 AD): “Where the Church is, there is the Spirit of God; and where the Spirit of God is, there is the Church.” (Against Heresies, 3:24:1)

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📌 Refuting INC and Protestant Claims

Against INC (Denying Christ’s Divinity)

• If Christ were not God, Scripture could not say the Church was purchased with “God’s own blood.”

• Denying Christ’s divinity contradicts not only Acts 20:28 but also the entire apostolic witness.

Against Protestantism (Rejecting Apostolic Authority)

• Acts 20:28 shows bishops as Spirit-appointed shepherds. Authority is not based on private interpretation of Scripture, but on apostolic succession.

• Without bishops in apostolic line, one cannot truly claim to shepherd the flock of God.

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📊 Comparative Chart: Acts 20:28 and Its Interpretation

Doctrine	Catholic Church	Iglesia ni Cristo (INC)	Protestantism
Christ’s Identity	Jesus is true God and true man (CCC 464–469). Acts 20:28 affirms divinity: the Church is purchased with “God’s own blood.”	Christ is only a man, not God. INC denies His divinity and interprets Acts 20:28 as “church of Christ” purchased by a man’s blood.	Most accept Christ’s divinity, but differ on its implications for Church authority.
Church Ownership	The Church belongs to God; it was purchased by Christ’s blood. The one, true Church subsists in the Catholic Church (CCC 816).	The Church of Christ (INC) claims to be the only true church, rejecting historical Christianity.	The “true church” is invisible, made of all believers; local churches are independent or denominational.
Church Leadership	Bishops are appointed by the Holy Spirit as successors of the apostles (CCC 1558). Apostolic succession guarantees unity and authority.	Leadership is institutional, but without apostolic succession. Authority is derived from Manalo’s teachings.	Pastors/elders lead based on interpretation of Scripture; no apostolic succession.
Authority Source	Authority is divine, passed on through apostolic succession and safeguarded by the Magisterium.	Authority comes from Felix Manalo and INC hierarchy, not from apostolic succession.	Authority comes from Scripture alone (sola scriptura), not an institutional magisterium.
Interpretation of Acts 20:28	Direct proof of Christ’s divinity and the Spirit-given authority of bishops.	Misinterpreted to deny Christ’s divinity, altering “Church of God” to “Church of Christ.”	Acknowledges Christ’s divinity, but ignores apostolic authority implied in the text.

✅ This chart highlights how Catholic teaching alone holds the full integrity of Acts 20:28 — affirming both Christ’s divinity and the apostolic authority of the Church. 

Why Are There Thousands of Christian Sects Today? Do They Connect to the True Church Founded by Jesus Christ?

Why are there thousands of Christian sects today? Discover their origins, and whether they connect to the one true Church Christ founded, with Bible & CCC evidence.

Introduction

Today, Christianity is divided into thousands of denominations and sects, each claiming to follow Christ’s teachings. From Catholicism to Orthodoxy, from mainline Protestantism to countless independent churches, the question arises:

👉 Are all these sects connected to the true Church Jesus founded?

The Catholic Church, guided by Scripture, Tradition, and the Magisterium, answers: Christ founded only one Church, and it has continued through history to the present day.

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Biblical Foundation: Jesus Founded One Church

• Matthew 16:18 — “You are Peter, and on this rock I will build my Church, and the gates of hell shall not prevail against it.”

• John 17:21 — Jesus prayed: “That they may all be one… so that the world may believe that you sent me.”

• Ephesians 4:4–5 — “There is one body and one Spirit… one Lord, one faith, one baptism.”

From the beginning, Christ clearly intended a visible, united Church—not thousands of competing sects.

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The Early Church Fathers on Unity

The Apostolic Fathers warned against divisions and heresies:

• St. Ignatius of Antioch (c. 107 A.D.):
  “Where the bishop appears, there let the people be; just as where Jesus Christ is, there is the Catholic Church.” (Letter to the Smyrnaeans 8:2)

• St. Irenaeus of Lyons (c. 180 A.D.):
  “The Church, though dispersed throughout the world… has received this faith from the apostles and their disciples… and preserves it.” (Against Heresies, I:10:2)

• St. Cyprian of Carthage (c. 251 A.D.):
  “He cannot have God for his Father who has not the Church for his Mother.” (On the Unity of the Church 6)

From the first centuries, unity with the apostolic Church was seen as essential. Splinter groups and sects were viewed as departures from Christ’s body.

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Why Are There Thousands of Christian Sects Today?

1. The Protestant Reformation (16th Century)

• Martin Luther (1517) protested abuses, leading to a split from Rome.

• Instead of reforming from within, many broke away, forming Lutheran, Calvinist, Anglican, and later hundreds of others.

• Each reformer interpreted Scripture independently, leading to endless divisions.

2. Sola Scriptura (Bible Alone)

• Protestant theology rejected the teaching authority of the Church (Magisterium).

• With no central authority, every individual or group could interpret Scripture differently—resulting in thousands of denominations.

• CCC 85–87 affirms: “The task of interpreting the Word of God authentically has been entrusted solely to the Magisterium of the Church.”

3. Cultural and Political Factors

• Nationalism, colonial expansion, and modern freedom movements created space for independent churches.

• In modern times, new “born-again,” charismatic, and non-denominational sects appear almost daily.

4. The Rise of “Personal Revelation”

• Groups like Jehovah’s Witnesses, Seventh-Day Adventists, and Iglesia ni Cristo began from leaders claiming a new prophetic revelation—outside historic Christianity.

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Are These Sects Connected to the Church of Christ?

The Catholic Church’s Position

• CCC 816: “The sole Church of Christ… subsists in the Catholic Church, which is governed by the successor of Peter and by the bishops in communion with him.”

• CCC 817–818: Division and schism are the result of human sin, but elements of truth and sanctification may exist outside the visible Catholic Church.

• CCC 820: Christ always wills unity: “The desire to recover the unity of all Christians is a gift of Christ and a call of the Holy Spirit.”

Biblical Support

• Christ warned against division: “Every kingdom divided against itself will be ruined.” (Matthew 12:25)

• St. Paul condemned factionalism: “Is Christ divided? Was Paul crucified for you?” (1 Corinthians 1:13)

Thus, while many sects contain some elements of Christian truth (Scripture, baptism, faith in Christ), fullness of the Church of Christ is found only in the Catholic Church.

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What Bible Scholars and Theologians Say

• Jaroslav Pelikan (Yale historian): “The Reformation was intended to restore Christian unity, but ironically it resulted in a multiplicity of churches.”

• J.N.D. Kelly (Early Christian Doctrines): The early Church was marked by “a continuous line of bishops from the apostles, preserving the true faith.”

• Cardinal John Henry Newman: “To be deep in history is to cease to be Protestant.”

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Conclusion

There are thousands of Christian sects today because of historical divisions, theological disagreements, and the rejection of the Church’s teaching authority. Yet the Bible, the Early Fathers, and the Catechism all affirm:

• Christ founded one visible Church, built on the apostles and continued through apostolic succession.

• The Catholic Church is that Church in which the fullness of Christ’s truth and grace subsists.

• Other sects may preserve elements of the Gospel, but the fullness of unity, sacraments, and teaching authority remains only in the Catholic Church.

As CCC 830 beautifully states:

“The Church is in history, but at the same time she transcends it. It is only with the eyes of faith that one can see her in her visible reality and at the same time in her spiritual dimension as bearer of divine life.”

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📜 Timeline of Major Splits in Christianity

1. The Early Church (30 AD – 313 AD)

• Foundation by Christ: “You are Peter, and on this rock I will build my Church” (Mt. 16:18).

• Apostles spread the Gospel, forming one united Catholic Church.

• Fathers like Ignatius of Antioch and Irenaeus of Lyons affirm unity with bishops and Rome.

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2. The Great Schism (1054 AD)

• Division between Rome (Catholic) and Constantinople (Orthodox).

• Issues: papal authority, Filioque clause, cultural/political tensions.

• Result: Roman Catholic Church (West) and Eastern Orthodox Church (East).

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3. The Protestant Reformation (1517 AD onward)

• Martin Luther (Germany) challenges indulgences → Lutheranism.

• John Calvin (Switzerland) → Reformed Churches.

• Henry VIII (England) → Anglicanism.

• Result: Fragmentation into multiple Protestant groups.

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4. Post-Reformation Splits (1600s – 1800s)

• Emergence of Baptists, Methodists, Presbyterians, Anabaptists, Quakers.

• Each group interprets Scripture independently → more division.

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5. Modern Denominational Explosion (1900s – Present)

• Rise of Pentecostalism (1906, Azusa Street Revival).

• Growth of Evangelicals, Charismatics, Non-denominational churches.

• New movements: Jehovah’s Witnesses, Seventh-Day Adventists, Iglesia ni Cristo, Mormonism.

• Today: Over 40,000 Christian denominations/sects worldwide (World Christian Encyclopedia).

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🎯 Key Takeaway

Despite the divisions:

• CCC 816 affirms: “The sole Church of Christ… subsists in the Catholic Church.”

• The Catholic Church preserves the apostolic succession, Eucharist, and the fullness of truth given by Christ.

• Other sects may carry elements of truth, but the one, holy, catholic, and apostolic Church remains the visible Church Christ founded.

✅ Final Takeaway: The thousands of Christian sects today are the result of human division. But the true Church founded by Jesus Christ remains one, holy, catholic, and apostolic—and that Church is the Catholic Church.

 

“I Am the Alpha and the Omega”: Refuting the INC Claim that Christ Is Not God

Did Jesus say, “I am the Alpha and the Omega”? Discover the Catholic defense against the INC claim that Christ is not God, with Biblical and CCC evidence.

Introduction

One of the clearest Biblical revelations about the divinity of Christ is the title “I am the Alpha and the Omega.” This phrase appears in the Book of Revelation (Apocalypse) and is understood by the Catholic Church as a declaration of God’s eternal nature—applied both to the Father and to the Son.

The Iglesia ni Cristo (INC) denies the divinity of Jesus, claiming He is a created being, not God Himself. But the Scriptures and the Church’s consistent teaching refute this claim. This article explains why the Catholic Church holds firmly that Jesus Christ is truly God, using the title “Alpha and Omega” as strong evidence.

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Biblical Texts: “I Am the Alpha and the Omega”

1. Revelation 1:8

“I am the Alpha and the Omega,” says the Lord God, “who is, and who was, and who is to come, the Almighty.”

2. Revelation 21:6

“It is done! I am the Alpha and the Omega, the Beginning and the End. To the thirsty I will give water without cost from the spring of the water of life.”

3. Revelation 22:13

“I am the Alpha and the Omega, the First and the Last, the Beginning and the End.”

Notice in Revelation 22:12–16, the speaker who says “I am the Alpha and the Omega” also identifies Himself as Jesus:

“I, Jesus, have sent my angel to give you this testimony for the churches. I am the Root and the Offspring of David, and the bright Morning Star.” (Rev. 22:16)

👉 This shows clearly: Jesus Himself uses the title “Alpha and Omega.”

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Theological Meaning of “Alpha and Omega”

• Alpha (first Greek letter) = beginning

• Omega (last Greek letter) = end

This signifies eternity, sovereignty, and divine omnipotence. Only God can truly claim to be the First and the Last, the source and destiny of all creation.

By applying this to Himself, Christ claims divine identity.

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Catholic Church Teaching

The Catechism of the Catholic Church (CCC) confirms the full divinity of Christ:

• CCC 234: “The mystery of the Most Holy Trinity is the central mystery of Christian faith and life.” Jesus is consubstantial with the Father.

• CCC 449: “By attributing to Jesus the divine title ‘Lord,’ the first confessions of the Church's faith affirm from the beginning that the power, honor, and glory due to God the Father are due also to Jesus.”

• CCC 454: “The title ‘Son of God’ signifies the unique and eternal relationship of Jesus Christ to God his Father: he is the only Son of the Father; he is God himself.”

• CCC 663–664: Christ now sits at the right hand of the Father, sharing in divine sovereignty.

Thus, when Revelation records Jesus saying, “I am the Alpha and the Omega,” it is a testimony of His eternal divinity, not just a metaphor.

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Refuting INC’s Position

The INC claims:

• “The Alpha and the Omega” refers only to the Father, not to Christ.

• Jesus is not God but merely God’s instrument.

Catholic Response:

1. The Bible itself shows that Jesus speaks the words “I am the Alpha and the Omega” (Rev. 22:13, 16).

2. The divine attributes—eternity, omnipotence, source of life—are explicitly applied to Christ.

3. Early Christians worshiped Jesus as Lord and God (John 20:28).

4. The Church Fathers, like St. Ignatius of Antioch (1st century), wrote: “There is one God who manifested himself through Jesus Christ, his Son, who is his eternal Word.”

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Early Church Witness

• St. Justin Martyr (2nd century): Affirmed Christ as the eternal Logos, God from God.

• St. Irenaeus of Lyons (2nd century): Called Christ “the eternal King and the Word of God, who existed from the beginning with the Father.”

• Nicene Creed (325 A.D.): Declares Christ as “God from God, Light from Light, true God from true God, begotten, not made, consubstantial with the Father.”

This is consistent with the Alpha and Omega proclamation.

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Conclusion

The words “I am the Alpha and the Omega” directly affirm the divinity of Jesus Christ. Contrary to the INC teaching, Scripture shows that Jesus Himself applies this divine title to Himself (Rev. 22:13–16). The Catholic Church, guided by Scripture, Tradition, and the Magisterium, has always proclaimed Jesus as true God and true man.

To deny His divinity is to reject the very heart of the Gospel. As St. Paul declares:

“In Him all the fullness of the Deity dwells bodily” (Colossians 2:9).

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✅ Final Takeaway for Readers:
When Jesus says, “I am the Alpha and the Omega,” He is not merely a messenger of God but God Himself—the eternal Word, the Beginning and the End.