The power of the mind is an amazing thing. People have invisioned their very own cells battling against cancer. Months later without medical intervention they are cancer free. The very belief in faith as in your own body to heal itself or having faith in a religious belief to help you. Either way miracles occur. A miracle is an unexplained occurrence when took away from the religious context.
Power of the mind can certainly be amazing, but so can it's fragility. What is certainly powerful too though, is the human compulsion and instinct to make sense of and find meaning in things. Its why we tell stories, and invariably we do so retrospectively. Things happen as a series of disconnected events, upon which we have little or no control, and no means of foresight. We don't like this, it's anathema to us, so afterwards, we tell stories, to join them up and show how they all made perfect sense or find a means to explain those that don't. The bible itself of course a collated example of loosely connected events and coincidences, dots joined up, gaps filled in, meaning found. Is it wrong? Who can really say, it's a story, it's in the eyes of the teller and the reader to decide.
As for the question of god and religion and faith itself though. Well, God as metaphor for the human condition, and faith the simple act of believing in something, in each other, the need to be more than just meat and a collective greater than the sum of its parts, for want of a better word, to have a soul, is that such a bad thing? Religion as a doctrine for people to live alongside one another, to love and to forgive and be kinder to one another, to nurture that collective spirit and be better than ourselves, is that so bad? I don't think it is.
But religion as a literal truth, magic man in the sky and all that? Nah, not for me, and is proven over and over again, a recipe for disaster. Makes a good story though.