It is dumb because it is in there, but not a single verse or two, it's the entire bible. I guess the big thing of proof that it demonstrates is that it wrote history before it came to pass.
Even some believers have their faith elsewhere than God. They read a little in the bible and form a picture of God and then perhaps remember good ol' Uncle Earls testimony when God helped them that one time and how He did it. So that adds to the picture and then what happens is that God will do something for them, but in a different way than He did for Uncle Earl, so it doesn't compute for them and they reject it, or rather, are distracted by their own thoughts on what should be happening, and it didn't happen like that for Earl so God don't work like that...and miss it.
God does want to reveal who He is, not just confirm who we think He is. He said something about no mind can even comprehend Him...so it's kind of dumb to think that we can question Him or ask for proofs. He already gave it to us. If we can't get it, then we're either not reading His word enough, or praying enough, or walking in faith enough...or something, because He also said that, Turn ye unto me, saith the Lord of hosts, and I will turn unto you, saith the Lord of hosts./ so live for the Spirit.
I thought the same thing about words. They are power and belong to God. They are a gift that He has given us. ow what are we going to do with it?
Oh great! Born into a war behind enemy lines, and have been surrounded by liars my entire life. Geez it takes 50 years just to figger out what going on here. I am not from here or of this world and realm, but the spiritual realm...which is a mystery, is how I am supposed to live. Yep. No doubt about it. I do need my Bible.
Proof is a given, it's all around us and in a book. All we have to do is apply faith.