Not sure where anyone would get the idea that Paul invented Christ.

Maybe you should do some investigating on your own. You could start with the book of Isaiah in the Old Testament. Paul quotes it quite alot in his New Testament writings.

On Jesus' first day of his ministry, he quotes Isaiah's prophecy of a future new age, and baldly states that the prophecy is being fulfilled, here and now.

Isaiah has the famous "He shall lead His flock like a shepherd"... this metaphor is used again and again by Jesus during His ministry.

Also there is , "Behold a virgin shall conceive, and bear a son...God with us"... and "His name shall be called Prince of Peace, Son of God..."

Many, many more referenced as well. Isaiah was not written by Paul. It is Jewish book, kept intact by Jews, not Christians. Christians have just blindly accepted the Old Testament into their Scriptures (Jesus did, His disciples did, so why wouldn't Jesus' followers?)

The Dead Sea Scrolls have a first century copy of this book, entombed for two thousand years. Yet, the words are remarkably preserved. And upon inspection, you will find that the words are 97% identical to words in our Hebrew Bible, the translation of which we carry around every day.

Paul didn't touch it.

So, your claim is quite bizarre, really, when faced with this archeological find.

Because, all Christian doctrine can be found in this book, my friend. Read it for yourself.