Paul certainly was fluent in the common Greek as he spoke in Athens to the philosophers and when Paul wanted to speak to the military commander the man asked Paul if he spoke Greek. But to the crowd in Jerusalem at this point Paul spoke Hebrew.
The common language around the Mediterranean was the koine Greek and the NT was written in Greek as the very oldest mss. show.
“The existence of Greek MS is evidence only of the political drive to change Christianity into just another pagan religion. They actively cleansed the world of accurate MS in the original language.”
A “political drive” by whom? And what was this “original language”? Hebrew?
I think you need to crack the history books and the Bible a bit more.
Dream on.