I am unaware my friend. Who are these knowers and how can they PROVE they KNOW?
I know of the "knowers", because I am one :)
I came to know there is a God before ever believing anything either way: I had a storybook childhood (not easy, but good and wonderful). Then after experiencing growing up, marriage, children, my own business, achieving award winning accomplishments in my career...I was a victim of crime, and my wonderful life came tumbling down like a house of cards. After knocking on all other doors, I came to open the god door, calling out to Him...and lo and behold--He answered. I was caught up in the spirit above the earth and shown many things, and then in an instant I was back in my body and experienced a great sense of peace. Life changed--I was changed. Within a couple of weeks I came to be in my brother's spare room, where I found a bible. I was drawn to it. I picked it up and started reading and couldn't put it down. I read if from cover to cover, barely stopping for food, or sleep; because what I found was that the Author of that book I had never known, without a doubt was also the Author of my experience. The One confirmed the other, and vice versa.
So...I know. I also know by that experience that the Bible is not just a literary book written by men, but rather a compilation of written witnesses just like myself down through the ages, not by the providence of men, but by God.
But, I will caution you, short of the same happening to you--that is all the proof you are going to get in this lifetime. After that, it will be too late. The point being...is that we are not suppose to be deflected by the lack of proof, but gravitate toward that which we will choose. As it is written: "
I have placed before you life and death, therefore, choose life."
So--the damage is done. Now you must choose.
As for the varying answers you hear: If you listen to all from any school, from the most elementary to the most learned...Yes, indeed, the variations will seem endless. But that only speaks of those individuals and their place, not of the truth. If you have not liked all the variations, all the more reason not to practice conjecture and opinion as many obviously do. And, Yes, there is a reason why these things are so. All in due time.
All the best to you!