it's not in the Bible because it does not meet the requirements of inspired Scripture.
And who decides what is "required" inspired Scripture?
I believe God was responsible for that. Or do you claim that He had nothing to do with it? The fact remains that if there is no God, my claim is invalid. But if there is a God, He would have made sure that we got His message intact. Don't you think?
No. I believe God intended for good and wise men that He spoke to, to pass on His messages thru those He walked with. But, man is not perfect. Only one was and look what was done to him!
Evil abounds and always has. So I don't trust any man that claims to speak for God because being non perfect, with flaws, that man or men have agendas that suit their own purposes. And some of those men decided, in their non perfect way, to decide for all what books or gospels should be paid attention to...and which ones were not deemed good enough to whatever agenda that needed to be met during those times.