[HighlyOpinionated]

Most would argue that Christ founded the Christian church, not the Catholic church (a subset of Christianity).

Most would then be wrong. The Christians of Antioch, where they were first called Christians, were a part of the "universal" Church. The term catholic means universal. By the 1st Century, the Church Fathers (leaders of the existing and growing Christian Church) were writing to each other about the catholic/universal/Catholic Church.

The Didache: The Lord's Teaching Through the Twelve Apostles to the Nations.

Eusebius of Cæsarea [260-c.341], the "Father of Church History": Church History

Bardesan[154-222]: The Book of the Laws of Various Countries

But I could quote a thousand times a thousand proofs and you would still believe as you do. So, don't go to this page to read from the writings of some who were with Jesus or who were disciples of those and who interchange the terms Christian Church and Catholic Church because in the first thousand plus years, the terms meant the same thing.

[SnakeDoctor]

Until the Protestant reformation, the terms did mean the same thing. Now, they do not. There is now a large segment of the Christian church which is wholly distinct from the Catholic church.

Whether that separation was guided by the Holy Spirit, as I believe, or a heresy may be debatable. So, the question is, is the body of Christ-followers, Protestants, that is specifically and intentionally not affiliated with Catholicism included in the church of Christ as discussed in the scripture?

I believe the Christian church referenced in scripture is encompassed by the combination of the modern Catholic and Protestant churches. If you believe Protestants are heretics — then you may still believe that Catholicism is the only Christian church. I think you’re wrong ... but you’re entitled to be wrong if it suits you.

SnakeDoc