When I was briefly a practicing member of the Baha'i Faith, I could tell that I was in essence 'polishing my soul' with Baha'u'llah's words. My demeanor changed, my words were softer and kinder and my soul was filled with the essence of your prophet. The illusion of change happened to me and I wasn't expecting to change so differently because I prayed and studied His words. In many ways I did view this change of attitude a miracle, but the non-religious side of myself isn't really that different or worse.
I consider practicing and following a religion to 'polish the soul' as it is. Some people have a really awful natural demeanor and their lives change when they become religious, and for other people, like myself, it only slightly enhances the original person's lifestyle. I was a better person when I practiced the Baha'i Faith, but I wasn't really myself. I could tell that I was acting certain behaviors not because I really wanted to do it, but because I was forcing myself into a position which I wanted to act differently.
Prophets, just like everybody else, lives and dies to help other people. If they weren't natural, they couldn't be of the natural world, but if they weren't divine, nobody would take their words seriously. There are still yet things that science cannot explain, the gaps of which are filled by religion. Of course, every year that passes we get closer and closer to understanding the whole without religion, but as it is currently good religion enforces good science and good science reinforces good religion.
Miracles happen everyday, yet, now that they are explained through science, they are considered natural and therefore don't need further investigation. I suspect that no matter which religion I had practiced I would be polishing my soul as a result from it. My standards are already quite high when it comes to engaging discussion with other people, so it wasn't necessarily a miracle when it improved just slightly when I heeded the words of Baha'u'llah. Yet still, I try my best to allow others to see the best of me, and the best of my opinions. I am meticulous with my words.
There's only so much that can happen from one person, or even a group a likeminded individuals. Religion has the power to transform lives and lift people up from the worst of society. Some people need that crutch in their lives. I just happen to be one of those who don't. I espouse Earthseed, syntheism and natural theology as the means I use to understand the divine, but even without these opinions I would still ultimately be me, I would be myself - I just wouldn't post here nearly as often as I currently do.
It's going to be a long time before my religion even becomes relevant, and by the time it does, people may just ignore religion altogether and create the divine without even knowing what they're doing. Most people seem to be oblivious already to the changes we create as a society. The fact that I can use a computer to type messages like this to a public forum to get my opinion heard on this matter is more than enough evidence to me that divinity is a real thing and life is about discovering the miraculous parts of existence. We are already more than enough as it is, yet we keep pushing to do more for ourselves, other people and our environment.
If that isn't enough of a miracle by its own right, I don't know what is.