Christianity Foundations · Lesson 6 of 6
Why Did Christ Establish a Church?
The Body of Christ and His Mission in the World
And behold I am with you all days, even to the consummation of the world.
Matthew 28:20 · Douay-Rheims
Christ Gathers a People
Jesus Did Not Leave Us Alone
Jesus did not leave behind only a book, a private spirituality, or a loose collection of teachings.
He gathered disciples, chose Apostles, gave them authority, instituted sacraments, and established a visible community called the Church.
Through the Church, Christ continues His mission: proclaiming the Gospel, guarding the truth, sanctifying through the sacraments, forming disciples, serving the suffering, and leading people toward salvation.
A Community of Disciples
Jesus Gathered a People
From the beginning of His public ministry, Jesus called people to leave their former lives and follow Him.
He did not form isolated spiritual seekers. He created a community with common faith, worship, mission, discipline, and love.
Among the disciples, Jesus chose twelve Apostles, symbolizing the restored People of God and preparing them to continue His mission.
And he chose twelve of them, whom also he named apostles.
Luke 6:13
Sent by Christ
Jesus Gave Authority to the Apostles
Jesus entrusted His Apostles with real authority to preach, teach, baptize, forgive sins, celebrate the Eucharist, govern, and shepherd His people.
This authority did not arise from ambition or community election. It came from Christ, who shared His own mission with those He had chosen.
To receive the authentic apostolic witness is therefore to receive Christ’s own teaching.
As the Father hath sent me, I also send you.
John 20:21
The Ministry of Unity
Jesus Built His Church on Peter
Jesus gave Saint Peter a distinctive role among the Apostles. He changed Simon’s name to Peter, gave him the keys of the Kingdom, prayed for his faith, and commanded him to strengthen his brethren and feed Christ’s flock.
Catholics believe that Peter received a real pastoral office that continues through his successors, the Bishops of Rome.
The Pope’s ministry exists to serve the unity, continuity, and apostolic faith of the universal Church.
Thou art Peter; and upon this rock I will build my church.
Matthew 16:18
More Than an Organization
The Church Is the Body of Christ
Scripture describes the Church as the Body of Christ. Christ is the Head, and baptized believers are members united to Him and to one another.
Christianity is therefore personal but never merely private. Communion with Christ draws us into communion with His people.
The Church is a visible community and a spiritual mystery: human in her members, yet divine in origin, life, mission, and grace.
Now you are the body of Christ, and members of member.
1 Corinthians 12:27
Word and Sacrament
The Church Proclaims, Teaches, and Sanctifies
Christ commanded the Church to proclaim the Gospel to every nation. She announces His life, teaching, Cross, Resurrection, mercy, and call to conversion.
The Holy Ghost guides the Church as she preserves and explains the apostolic faith rather than allowing the Gospel to become whatever each generation prefers.
Through Baptism, Confirmation, Eucharist, Confession, Anointing, Holy Orders, and Matrimony, Christ continues to communicate grace to His people.
Going therefore, teach ye all nations; baptizing them in the name of the Father, and of the Son, and of the Holy Ghost.
Matthew 28:19
For the Salvation of Souls
The Church Leads People Toward Eternal Life
The Church exists because God desires the salvation of every person.
She calls sinners to repentance, forms disciples, nourishes the faithful, protects revealed truth, serves those in need, and prepares souls for eternal communion with God.
Her mission is not self-preservation. It is participation in the saving mission of Jesus Christ.
Who will have all men to be saved, and to come to the knowledge of the truth.
1 Timothy 2:4
Continuity Through the Ages
Apostolic Succession
The Apostles did not understand their mission as ending with their deaths. They appointed successors to teach, govern, sanctify, and shepherd local churches.
Catholics call this Apostolic Succession. Bishops today continue the pastoral ministry entrusted by Christ to the Apostles through sacramental ordination and communion in the apostolic faith.
This historical and sacramental continuity helps preserve unity, authentic teaching, and valid sacramental life across generations.
The things which thou hast heard of me by many witnesses, the same commend to faithful men, who shall be fit to teach others also.
2 Timothy 2:2
The Continuing Mission of Christ
Why the Church Exists
The Church serves Christ’s mission through inseparable forms of Christian life.
Proclaim
The Church announces Jesus Christ and calls every nation to faith and conversion.
Teach
She guards and explains the apostolic faith entrusted by Christ.
Sanctify
Through worship and sacraments, Christ shares His grace and divine life.
Shepherd
The Church forms disciples, serves the vulnerable, and guides souls toward eternal life.
Essential Summary
Key Truths About the Church
- Jesus established a visible community of disciples.
- He chose twelve Apostles and gave them authority to continue His mission.
- Saint Peter received a distinctive pastoral office of unity and leadership.
- The Church is the Body of Christ, not merely a voluntary human organization.
- The Church proclaims the Gospel to every nation.
- The Holy Ghost guides the Church in preserving the apostolic faith.
- Christ communicates grace through the sacraments of His Church.
- The mission of the Church is directed toward the salvation and holiness of souls.
- Bishops continue the apostolic ministry through Apostolic Succession.
What Does This Mean for Me?
Christ Calls You Into His Body
Jesus does not call us to invent Christianity for ourselves or follow Him in permanent isolation.
He calls us into His Church, where we receive apostolic teaching, common worship, sacramental grace, spiritual family, pastoral guidance, and a mission to serve.
If Christ established a Church, then discovering that Church is an essential part of responding fully to Him.
A Prayer for the Church
Lord Jesus Christ, Lead Me Into Your Church
Lord Jesus Christ, You gathered disciples, chose Apostles, and established Your Church.
Free me from pride, confusion, fear, and prejudice. Lead me into the fullness of the truth You entrusted to Your people.
Unite me to Your Body, nourish me through Your sacraments, and make me a faithful witness to Your Gospel. Amen.
Continue Into Catholicism
New to Catholicism?
You have completed the six Christianity Foundations lessons. Continue by exploring why Catholics believe the Catholic Church preserves the fullness of the apostolic faith and sacramental life.