Well since others have shown their view I guess I can put in my two cents.
1.
Jesus built his church
Mat 16:18 And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it.
Ok Jesus used/and is still using Man (the apostles) to build his Church
2.
Christ is head- A church teaching that a man is head cannot be the same church that Christ built. He is head of His church, not Peter or any other earthly representative -
Eph 5:23 For the husband is the head of the wife, even as Christ is the head of the church: and he is the saviour of the body.
2 He is head of His church, not Peter or any other earthly representative -
1 Peter 3:22
22 who has gone into heaven and is at the right hand of God, with angels, authorities, and powers made subject to him.
If there are powers and authorities under God in Heaven, why can't there be powers and authorities under God on earth? There are and God made it so
1 Peter 2:9 NRSA
But you are a chosen race, a royal priesthood, a holy nation, God's own people, in order that you may proclaim the mighty acts of him who called you out of darkness into his marvelous light.The Catholic Church is the only" Holy Nation" on earth and with a royal priesthood
3.
Added by the Lord Acts 2:38, 47 - so those who take a vote to accept new members are not getting that idea from scripture
Acts 1: 23-26
23 So they proposed two, Joseph called Barsabbas, who was also known as Justus, and Matthias. 24 Then they prayed and said, "Lord, you know everyone's heart. Show us which one of these two you have chosen 25 to take the place in this ministry and apostleship from which Judas turned aside to go to his own place." 26 And they cast lots for them, and the lot fell on Matthias; and he was added to the eleven apostles.
This says they do take a vote, with guidance from the Holy Spirit
4.
Unity - There is only one church with one faith: anyone who says all faiths are ok as long as we believe in Chirst cannot be the same church Christ built because that church is instructed not to accept anything other than what what was taught. Rom 16:17, Gal 1:8-9.
Eph 4:4 There is one body, and one Spirit, even as ye are called in one hope of your calling;
Eph 4:5 One Lord, one faith, one baptism,
There are not many bodies with many faiths, nor one body with many faiths, but as the Bible says "one body, one faith".
agreeing to disagree is not the answer for divsion. we cannot have unity through diversity because we all must speak, judge, and teach the same if we are members of the Lord's church:
1Co 1:10 Now I beseech you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing, and that there be no divisions among you; but that ye be perfectly joined together in the same mind and in the same judgment.
5.
Autonomy - The church Christ built did not have an earthly headquarters governing the congregations.
1 Peter 3:22
22 who has gone into heaven and is at the right hand of God, with angels, authorities, and powers made subject to him.
If there are powers and authorities under God in Heaven, why can't there be powers and authorities under God on earth? There are and God made it so
1 Peter 2:9 NRSA
But you are a chosen race, a royal priesthood, a holy nation, God's own people, in order that you may proclaim the mighty acts of him who called you out of darkness into his marvelous light
.The Catholic Church is the only" Holy Nation" on earth and with a royal priesthood
6.
NO creed book -
The Creed merely outlines the faith without adding or subtracting from anything Jesus said.
7. The Lords supper -
Acts 8:14-17
14 Now when the apostles that were at Jerusalem heard that Samaria had received the word of God, they sent unto them Peter and John: 15 who, when they were come down, prayed for them, that they might receive the Holy Spirit: 16 for as yet it was fallen upon none of them: only they had been baptized into the name of the Lord Jesus. 17 Then they laid their hands on them, and they received the Holy Spirit.
Laying of hands is essential to change the physical man into the spiritual man -- a change that is proven but not obvious to a common bystander
If God can change Man using a man. He can change bread and wine using a man. The Priest uses laying of hands to change the bread and wine into the Body and Blood of Christ - a change that is proven* but not obvious to the common bystander
* Miracle of Lanciano -- Wikipedia
Miracle of Lanciano - Wikipedia, the free encyclopedia