Wicca is a spiritual practice which believes everything in nature is connected by energy - some think of that energy as God or various Gods and Goddesses, others as a universal force similar to the force in Star Wars.
Whatever you call it, it is created by and connects every living thing on the Earth and the Earth itself. That force is within us all so we are all part of it (I'll refer to it in the rest of this article as God for convenience) and we all have God within us.
Is Wicca a Religion?