Thanks, that settles the argument then. The Professor is incorrect, for whatever reason. I don't care really which you pick one. I'll share the love.
Non-sequitur, this has nothing to do with the argument.
The argument is not about who wrote the bible.
The argument is about whether the Bible actually shows Satan to be evil or not. There are many many verses conveying this, Genesis, Job, John, etc. Revelations 12:9 is the most clear because it even references Satan as the serpent from Genesis wrapping the whole deal up with a nice bow on top of it. So the dispute is settled. I look forward to your apology.