Is man this smart?

I know that man have unique minds but I don't think man are smart enough to come up with the bible. Yes man has taken out and added a few things (like easter that is a pagan holiday not Christian) but the ones who has the Holy Spirit directing them can see His perfect word through it all. The things I seen with my own eyes by studying spiritual warfare and so fort if I did't know God, I would be a patient of psychology instead of a student. I know many have they own reason why they don't believe in God, but I hope that some are not that close minded or stubborn to believe that all these testimonies of supernatural disturbance, astro projects, demonize people is nothing more than psychological problems or made up. I wanted to deny God so many times growing up because how my life was but that would be a lie. i know the truth but sometime I wish I didn't and a lot of times I don't want to except it.