many years ago I read a book about an entity that moved into different objects, even people. In the beginning the entity moved into a tree and a person thought it was a magical tree as it spoke to them. Then it moved on into a person, and so on throughout the book. It was a very long time ago I read this novel and so the details are very sketchy. If anyone can help me find this book title again I would very much appreciate it. Thanks.
This sounds like it could be Ghostwritten, by David Mitchell. It's a series of short stories that are at first apparently unconnected but as they progress it is revealed that there is a non-corporeal entity passing from host to host through the characters in each tale and influencing events. In one story this "spirit" leads a woman to believe that a tree by her home is speaking to her (but it is actually the spirit, who is using her as a host).