Authority of the Church

Jesus said to his disciples, “Whoever listens to you listens to me; whoever rejects you rejects me, and whoever rejects me rejects the one sent to me.” Luke 10:16
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2 Thessalonians 3:14-15, Matthew 8:15-17, 1 Timothy 3:14-15, 4, 11-16
Hebrews 13:7-17, 1 Peter 4:17.
Although St. Paul does not use the word “church” in Tim 3, 14 – 1 5, it suggests it, along with its authority, to teach, exhort, and even excommunicate heretical members if necessary. In Tim 4:1-16, we see St. Paul commending St. Timothy, the young bishop, for the teaching authority he has by virtue of his episcopal office. But this special authority and duty to teach, which Paul mentions to Timothy, extends to the Magisterium of the Church as a whole, i. j., to all the bishops in the world who teach the faith in communion with the Bishop of Rome. The term “house of God” is appropriate for describing the Church.
Saint Peter uses this image in 1 Pt 4, 1 7
in his encouragement to persecuted and suffering Christians.
Church: a sign of unity. In John 17, 20-21 is the main idea: Christ’s unity prayer, the unity of Christians: “Father … well, I ask not only for them, but also for those who through their word believe in me to they were all one as you, Father, in me and me in you, that they too may be one in us, that the world may believe that you sent me.” “To achieve this, Christ established his Church as a visible sign of his presence in all ages and a unifying power in the lives of those who love and remain in it.” Stay in me, and I will stay in you. A branch cannot bear fruit on its own unless it remains in the vineyard; neither can you unless you remain in me. I’m a vine; you are the branches. Who abides in me, and I in him, bears much fruit; for without me you can do nothing” (John 15: 4-5). This unity in Christ and through Christ, which the Church shows, is not only the unity of believers but also the unity of teaching. For the last two thousand years, the Catholic Church has embodied the “fullness of the Christian faith.” And this is where the Christian will find true unity with Christ, with other Christians, and with the teachings of Christ passed on to the Church (compare Matthew 28:18-20). * Roman 16:17-18: “Please, brethren, pay heed to those who provoke strife and offense in opposition to the teachings which you have received, and avoid them. For they do not serve Christ our Lord, but their own belly; with sweet words and with deceit they deceive the hearts of the innocent. * 1 Cor 1:10: “I beseech you, brethren, in the name of our Lord Jesus Christ, all say the same thing, that there be no divisions among you, but that ye should be perfect in the same mind and in the same judgment.
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Matthew 12.4-5 F / Philippians 1.27-28; 2.21 Cor 10:17; 12, 12,12-2 7
Colossians 1.14 3.15
In Titus 1:4-16, as well as in the Apostolic Letters to Timothy, St. Paul speaks with another bishop—Tito—about the importance of unity in the Church’s teaching. It also emphasizes the bishop’s authority and duty to teach the gospel faithfully and accurately and to choose a capable man as his follower in the role of bishop.