A religion that's also known as "the secret".
If it is a secret, I don't know about it. Not knowing about it, how can I answer your question. I have heard the name Kabbalah, but I'm really not that familiiar with it.
Secret, however, with the mainstream religions had a different meaning than what it means today. Long ago, they did not have printing presses. Things were printed by hand by monks. Everything did not get copied. Those things that did not get copied were called secret. That did not mean that they were meant to remain secret. So to answer part of your question. I don't believe your religion should be kept secret and should be shared with others.