The way I see it, some actually happened (the ressurection in particular), although not necessarily exactly as they are recorded, which does not mean that feeding the five thousand is a metaphor for unbounded sharing or something. However, some were probably originally parables or stories that Jesus told that got turned into miracles he performed later. We have to remember that the only part of the Bible that was actually written down by the originator were the letters Paul wrote to the different churches, and we don't even have the original manuscripts of most of those anymore. I'd recommend everyone that reads this go out and read some books by two men, Paramhansa Yogananda, and Kriyananda (J Donald Walters). They founded a religion in the US thats sort of Christian Hindu Mysticism that deals with a lot of this sort of thing. I'd recommend their autobiographies, "Autobiography of a Yogi", and "the Path: Autobiography of a Western Yogi", in order to understand their viewpoint. I would recommend "the Promise of Immortality", about the parallel teachings of the Bible and Bhagavad Ghita, by Kriyananda, which gets into a lot of stuff about miracles, etc, but I wouldn't recommend it as the first book of theirs to read. You would probably be best off starting with a trilogy thats collections of transcripts from lecture given by Yogananda, the first one is titled "Man's Search for Meaning" I think, not positive, the second is titled "the Divine Romance", and I don't remember the name of the third. I would definitely recommend reading at least some of the first volume before the second, even though the second goes into Christian stuff and the first barely touches on the subject, as its likely there'll be stuff in the second that will make no sense to you without reading the first.