There's no evidence that I've been able to find which would suggest to me that the Biblical scriptures were modified, are copies of copies or don't belong there. The oldest known version of the New Testament dates back very close to the time of Christ, and comparisons done between the older texts and modern day Bibles show very little differences or inconsistencies. To me this is irrelevant since even if the Bible is authentic this would not justify taking the material in it literally either way. I'm not knowledgable enough to proclaim whether Jesus really existed or not, or if he did whether he was God, the Son of God, a highly gifted medium, a highly evolved spirit or just an averge mortal, but I'm on the side that Jesus likely did exist. I'm reasonably convinced about one thing pertaining to Christianity, that it borrowed ideas and customs from earlier pre-Christian religions/beliefs.
I do, even as a nonreligionist, think that most religions have something important to say and may have at least some truth to them. Despite me not taking any religion or religious book literally, it does seem that the Bible scriptures match up with some of the phenomena that secular afterlife and paranormal researchers have uncovered over the years. The Bible speaks about mediumship being dangerous, and this seems to be rightfully so as unguided mediumship will likely result in contact with lower entities. Since the lower astral realms and their inhabitants are supposedly closer to the physical realm then much of the concern for the occult can be justified in my eyes. There seems to be a great deal of material in the Bible that appears
to support the accounts of many afterlife books that I've read, including but not limited to the Anthony Borgia books. Even the concept of Hades seems to match up with the lower astral realms. I wonder how many people, Christians included, really attempt to read the Bible for themselves. Sadly it's been demonstrated that atheists in general seem to know much more about the Bible than most Christians do.