They say Jesus was a Gnostic and even though he basically preached Christianity, he also agreed with other religions as well and teachings from many such as John the Baptist, but he ultimately answered and believed in one God, his father.
I call myself a Gnostic as well. I believe in a higher power and that higher power is God, I also believe in Jesus the Christ and also my higher self. I also believe in the teachings of Buddha. Gnosticsm is about knowing yourself and accepting and realizing your own divinity. The word Gnosis means "to know".
My higher self is the true me. It is the perfected being I am aiming to become in this life.
I believe in reincarnation. I know I've lived thousands and thousands of lives. I'm what they call an Ancient Sage Soul. I hope this time around I can finally ascend and become a Master in my own right. I know why I'm here and what my mission is. My mission is to become love and teach others all about love. Just like Christ did. We should all strive to become more like Christ. If enough of us become more loving we can change our world. We can start by eliminating hate and discord amongst each other. So what if another human being believes in a different God or a different way of life? What does that matter to you anyway? How are they affecting you personally? They aren't. We need to stop trying to control others and making them believe our way is the best way or else....we also need to stop judging or disliking someone just because they come from another culture or have a different color skin..... We are all children of God and God does not care where we came from or the color of our skin, he loves us anyway. Why can't we be more like that? Why are you threatened by something different? Ask yourself why?
So always ask yourself this question when you are on your path. Does this feel real or true to me in my own heart? If it does, it probably is. But then again, we do create our own reality.
And one more thing. Here is something Buddah once said:
"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense." --Buddha (563BC-483BC)