Can you show me in the Word of God where it teaches the Church is a building? No, but there is more evidence that it is a gathering more than a building… Christ said where two or three gather in his name he will be there- he didn’t say Where two or three gather in my name a roof will be instantly cast over there head joined with a magnificent building so that a leading authority may teach to the other lesser individuals about what is right and wrong- Nope doesn’t say that…
You alleged that the Catholic belief is that the Church is a building. CM never alleged the opposite. If all of the Churches were destroyed would there still be a Catholic Church? Most certainly. Two or three gathered in His name does not gaurantee infallibility.
As for the Church as a teaching body, you are quite mistaken:
Mat 28:18-19 “And Jesus coming, spoke to them, saying:
All power is given to me in heaven and in earth. Going therefore,
teach ye all nations; baptizing them in the name of the Father, and of the Son, and of the Holy Ghost.”
John 20:21-22 “He said therefore to them again: Peace be to you. As the Father hath sent me, I also send you. When he had said this, he breathed on them; and he said to them: Receive ye the Holy Ghost.”
Jesus sent the apostles with the same authority that the father sent Him: with “all power in heaven and in earth”.
In 2Ti 2:2 we see the following:
“And 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.”
Here we see Paul telling Timothy to teach mean what he has taught him, so that they may go on to teach others. This shows four “generations” so to say with succession; First Paul, second Timothy, third the men Timothy teaches, and fourth the men they will teach.
Here Paul stresses unity in doctrine:
1Cor 1:10 "Now I beseech you, brethren, by the name of our Lord Jesus Christ, that you all speak the same thing, and that there be no schisms among you; but that you be perfect in the same mind, and in the same judgment. "
And again showing unity of faith:
Eph 4:3-5 “Careful to keep the unity of the Spirit in the bond of peace. One body and one Spirit; as you are called in one hope of your calling. One Lord, one faith, one baptism.”
And again in verse 14-15:
“That henceforth we be no more children tossed to and fro, and carried about with every wind of doctrine by the wickedness of men, by cunning craftiness, by which they lie in wait to deceive. But doing the truth in charity, we may in all things grow up in him who is the head, even Christ:” Christ is mentioned again as the head of the church in Eph 5:23. To be united in doctrine is to be united to the Church, of which Christ is the head.
Again Paul stresses unity in orthodoxy as he exhorts Timothy to keep the faithful from learning error:
1Ti 1:3 “As I desired thee to remain at Ephesus when I went into Macedonia, that thou mightest charge some not to teach otherwise,”
And to the Galatians: “But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.”
Paul again teaches Timothy about the dangers of conflicting doctrines:
1Ti 4:1 “Now the Spirit manifestly saith, that in the last times some shall depart from the faith, giving heed to spirits of error, and doctrines of devils,”
Paul now tells Titus about unity in doctrine:
Titus 1:9 “Embracing that faithful word which is according to doctrine, that he may be able to exhort in sound doctrine, and to convince the gainsayers.”
That proves the Church is a teaching body. Next we have which teachers we are to listen to:
The sucession of Judas by Matthias (Acts 1:20-26)
Reference to an apostle’s ministry as a “bishopric” (Acts 1:20)
Paul’s instructions on how to select Bishops (1Ti 3:1-5, Titus 1:7-9)
Paul’s preparation of Timothy to succeed him (2Ti 4:1-6)
Paul’s instructions to Timothy to teach other men that they may teach others (2Ti 2:2)
And that succession occurs with laying of hands in ordination by the previously ordained (1Ti 4:14,5:22, 2Ti 1:6)
The bishop is the shepherd of souls (1Peter 2:25)
The bishops have the authority to teach, and the office of bishop is transferrable. Because Jesus sent them the Holy Ghost to lead them into truth (John 14:26) and Jesus told them to teach and promised to be with them to the end of the age (Mat 28:20) the Church teaches infallibly.