Yes, it is, if there is literally no evidence to the contrary, you have never heard any consistent claims otherwise, and you have never experienced anything tha

Yes, it is, if there is literally no evidence to the contrary, you have never heard any consistent claims otherwise, and you have never experienced anything that would cast it into doubt. That's not the reality we live in, though. The Bible can't even keep from contradicting itself, so external evidence isn't even necessary to doubt the literal word of it.