from another thread
"What proof do you have that all these churches recognized that they were part of one church? If they were, why was it necessary for God to have to have messages sent to them all individually? Wouldn’t one have sufficed?
You know the ECF taught that the bishop was head of the church and the next one to Christ. They did not teach that another bishop was over all the churches. That fabrication came much later.
Revelation should prove that there were multiple churches, instead you attempt to refute it with no proof."
Isn’t Scripture enough?
18"I also say to you that you are Peter, and upon this rock I will build My church; and the gates of Hades will not overpower it.
How many churches?
16"I have other sheep, which are not of this fold; I must bring them also, and they will hear My voice; and they will become **one flock with one shepherd. **
How many flocks and how many shepherds?
11"I am no longer in the world; and yet they themselves are in the world, and I come to You Holy Father, keep them in Your name, the name which You have given Me, that they may be **one even as We are. **
21that they may all be one; even as You, Father, are in Me and I in You, that they also may be in Us, so that the world may believe that You sent Me.
23I in them and You in Me, that they may be perfected in unity, so that the world may know that You sent Me, and loved them, even as You have loved Me.
3being diligent to preserve the **unity **of the Spirit in the bond of peace.
4There is one body and one Spirit, just as also you were called in **one hope **of your calling;
5one Lord, one faith, one baptism,
25Husbands, love your wives, just as **Christ also loved the church and gave Himself up for her, **
How many brides does Jesus have?
30because we are members of His body.
4For just as we have many members in **one body **and all the members do not have the same function,
5so we, who are many, are **one body **in Christ, and individually members one of another.
How many bodies?
27Only conduct yourselves in a manner worthy of the gospel of Christ, so that whether I come and see you or remain absent, I will hear of you that you are standing firm in one spirit, with one mind striving together for the faith of the gospel;
2make my joy complete by being of the same mind, maintaining the same love, united in spirit, intent on one purpose.
18He is also head of the body, the church; and He is the beginning, the firstborn from the dead, so that He Himself will come to have first place in everything.
How many heads?
Think of it like this …
There are many 7/11’s (Catholic Churches)
Each managed by different managers (bishops), with one employee handbook (Bible) ,written by and for the store (Church), in different languages (translations).
But they all are still the same 7/11 (Catholic Church) with the same employee handbook (Bible) that guides each store (Church) owned by one ultimate boss (God) who sent His Son (Jesus) to put the vice president (St. Peter) in charge of advertisement (preaching the Gospel).