This is an excellent post by Asbury NT Professor Ben Witherington. Here’s a quote. I hope you will take a few minutes and read the rest.
Human beings have an infinite capacity to convince themselves they are seeing or experiencing or learning something, when in fact they are fooling themselves. My point in this particular post has to do with virtual knowledge, the kind you often find for free on the internet. The kind that can get you in a heap of trouble and make you a bad witness to what the Bible actually says and teaches.