Jesus and the apostles. I suspect that their day-to-day reports won’t exactly tie out to the biblical accounts of the same events. Perhaps it will teach modern day Christians to be a bit more open minded about the reliability of the bible.
Sir Isaac Newton.
Jonathan Swift, Alexander Pope and Samuel Johnson.
Thought of a couple more - John Aubrey, whose Brief Lives is a wonderfully gossipy compilation of curious and amusing facts, and Antony Weldon, or whoever was the author of scabrous memoirs of court politics and scandals in the run-up to the Civil Wars, which are just the sort of thing you get on social media.
Mozart would get banned fairly quickly for harassing women and extreme profanity. But he’d be fun for the duration.
He would have been even better on Usenet.
Google won’t translate Aramaic.
eta. I’d prefer God posting. We could get some real-time smiting!
“His Majesty is like Bat Piss.”
We used to have one of those around here.