Good grief, guy, have you ever even looked at the book? Of course they weren't contemporaries. He never met Jesus. He never saw Jesus. You never heard anything about Jesus when Jesus was alive.
Paul is genius: If you can't beat them, make them join you.
Or like this fellow said,
"There is an old expression,
The fastest way to power is to find a parade, and put yourself at the front of it.
It appears that this is what Paul did with the Christian movement."
https://www.quora.com/profile/Earl-Blake-1
https://www.quora.com/Is-Christianity-an-invention-of-St-Paul
There are those who claim that Paul invented Jesus. He was the first one to write anything him, after all. A couple decades later.
But at some point out on that link, can't be, because Paul used to kill Christians, and he wrote that there was already a Christian sect going before he converted. But then we're going by Paul's words. On the other hand, as he did hijack what was going on before and corrupted it to suit his Roman agenda, seems like that scene may very well have been going on after all.
So it is plausible that Paul did not invent Jesus, but he did create Christianity, or at least recreated it in his own image.
Yes, the prevailing view among so-called Christian 'scientists' is that their subject of their worship is real. Shocker, I know.
Over a billion Indians acknowledge the existence of a blue elephant headed God. And that God existed long before Jesus, long before Judaism.
So did Krishna. Do you know whose life bears an uncanny resemblance to Krishna's life as a man? HINT: Rhymes with "Jesus"
Still waiting for that historical proof of Jesus that you've been saving for a special occasion.