Sense.
Show me where Christ taught of the mystery of One Body or the Church Of Christ or salvation by grace.
Now show me where Paul taught those topics.
See, there's a difference.
Although each group was a new group, they were all part of the Church of Christ.
But each one had different needs and applications of the same truths. They were similar yet different.
You wrote:
“Show me where Christ taught of the mystery of One Body...”
What mystery of one body in Paul?
“or the Church Of Christ”
Christ spoke of His Church in Matthew 16. If HE was the Christ, and He was and is, then His Church would be the Church of Christ.
“or salvation by grace.”
And the Word became flesh and dwelt among us, and we beheld His glory, the glory as of the only begotten of the Father, full of grace and truth. (John 1:14, NKJV). If Jesus died for our sins - and He did - then clearly His fullness of grace is for our salvation.
Now show me where Paul taught those topics.
“See, there’s a difference.”
Nope. None.
“Although each group was a new group, they were all part of the Church of Christ.”
Nope. Each new group is a new group teaching a new gospel.