The Importance of Reincarnation

There is talk about reincarnation out in the world. I think if it is real, and we do get to come back, that there's part of us that can actually remain on the other side. Our loved ones truly are around us, and they want us to know that they're still alive. So many people just before they have an operation, whether or not they believed in God or a bigger picture, they pray. If there was only reincarnation, there would still be 4 billion people right? Something to think about.