The Church is Visible and One
Matt. 5:14 - Jesus says a city set on a hill cannot be hidden, and this is in reference to the Church. The Church is not an invisible, ethereal, atmospheric presence, but a single, visible and universal body through the Eucharist. The Church is an extension of the Incarnation.
Matt. 12:25; Mark 3:25; Luke 11:17 - Jesus says a kingdom divided against itself is laid waste and will not stand. This describes Protestantism and the many thousands of denominations that continue to multiply each year.
Matt. 16:18 - Jesus says, "I will build my 'Church' (not churches)." There is only one Church built upon one Rock with one teaching authority, not many different denominations, built upon various pastoral opinions and suggestions.
Matt. 16:19; 18:18 - Jesus gave the apostles binding and loosing authority. But this authority requires a visible Church because "binding and loosing" are visible acts. The Church cannot be invisible, or it cannot bind and loose.
John 10:16 - Jesus says there must only be one flock and one shepherd. This cannot mean many denominations and many pastors, all teaching different doctrines. Those outside the fold must be brought into the Church.
John 17:11,21,23 - Jesus prays that His followers may be perfectly one as He is one with the Father. Jesus' oneness with the Father is perfect. It can never be less. Thus, the oneness Jesus prays for cannot mean the varied divisions of Christianity that have resulted since the Protestant reformation. There is perfect oneness only in the Catholic Church.
John 17:9-26 - Jesus' prayer, of course, is perfectly effective, as evidenced by the miraculous unity of the Catholic Church during her 2,000 year history.
John 17:21 - Jesus states that the visible unity of the Church would be a sign that He was sent by God. This is an extremely important verse. Jesus tells us that the unity of the Church is what bears witness to Him and the reality of who He is and what He came to do for us. There is only one Church that is universally united, and that is the Catholic Church. Only the unity of the Catholic Church truly bears witness to the reality that Jesus Christ was sent by the Father.
Rom. 15:5 - Paul says that we as Christians must live in harmony with one another. But this can only happen if there is one Church with one body of faith. This can only happen by the charity of the Holy Spirit who dwells within the Church.
Rom. 16:17 - Paul warns us to avoid those who create dissensions and difficulties. This includes those who break away from the Church and create one denomination after another. We need to avoid their teaching, and bring them back into the one fold of Christ.
1 Cor. 1:10- Paul prays for no dissensions and disagreements among Christians, being of the same mind and the same judgment. How can Protestant pastors say that they are all of the same mind and the same judgment on matters of faith and morals?
Eph. 1:22-23; 5:23-32; Col. 1:18,24 - again, the Church does not mean "invisible" unity, because Paul called it the body (not the soul) of Christ. Bodies are visible, and souls are invisible.
Eph. 4:11-14 - God gives members of the Church various gifts in order to attain to the unity of the faith. This unity is only found in the Catholic Church.
Eph. 4:3-5 - we are of one body, one Spirit, one faith and one baptism. This requires doctrinal unity, not 30,000 different denominations.
Eph. 5:25 - the Church is the Bride of Christ. Jesus has only one Bride, not many.
Eph. 5:30; Rom. 12:4-5; 1 Cor. 6:15 - we, as Christians, are one visible body in Christ, not many bodies, many denominations.
Phil. 1:27 - Paul commands that we stand firm in one spirit, with one mind striving side by side for the faith of the Gospel.
Phil. 2:2 - Paul prays that Christians be of the same mind, of one accord. Yet there are 30,000 different "Protest"ant denominations?
Col. 1:18 - Christ is the Head of the one body, the Church. He is not the Head of many bodies or many sects.
1 Tim. 6:4 - Paul warns about those who seek controversy and disputes about words. There must be a universal authority to appeal to who can trace its authority back to Christ.
2 Tim. 2:14 - do not dispute about words which only ruin the hearers. Two-thousand years of doctrinal unity is a sign of Christ's Church.
2 Tim. 4:3 - this is a warning on following our own desires and not the teachings of God. It is not a cafeteria where we pick and choose. We must humble ourselves and accept all of Christ's teachings which He gives us through His Church.
Rev. 7:9 - the heavenly kingdom is filled with those from every nation and from all tribes, peoples and tongues. This is "catholic," which means universal.
1 Peter 3:8 - Peter charges us to have unity of spirit. This is impossible unless there is a central teaching authority given to us by God.
Gen. 12:2-3 - since Abram God said all the families of the earth shall be blessed. This family unity is fulfilled only in the Catholic Church.
Dan. 7:14 - Daniel prophesies that all peoples, nations and languages shall serve His kingdom. Again, this catholicity is only found in the Catholic Church.
1 Cor. 14:33 - God cannot be the author of the Protestant confusion. Only the One, Holy, Catholic and Apostolic Church claims and proves to be Christ's Church.