This goes along with what Dammummis and Shelly said....plus more rambling on from me for clarification for interested non-pagans.
There is a book that I have called Solitary Witch by Silver Ravenwolf. Here are a few quotes.
"The Concept of what God is to every Wiccan becomes a deep, philosophical, and precious subject. ...The religion of Witchcraft allows people to believe what they want in respect to "what runs the universe". ...Most Wiccans believe that there is a single source of positive energy or force that runs the universe. Because it is hard to connect in times of trial with a "source", we've divided it into the Lord and the Lady--male and female. ...Another interesting ancient deity concept often favored by Witches is the trinity. The idea that "three makes one" isn't a foreign construct in the major religions of today; in Christianity, we see Father, Son, and Holy Ghost. ...In Jewish Kabbalah, there are several manifestations of three-to-make-one, including the daughter, bride, and mother of Malkhut... ...Many Wiccans use pantheons (family trees of gods and goddess linked by cultural belief) as representation of the single source--with personality."
For some explanation/clarification...
A pantheon is the god's of particular faith or mythology considered collectively. For example, it could the celtic gods and goddesses, or roman, norse, greek, Native American, etc. as well as Christian (Jesus, Mother Mary, Moses, etc), Jewish or Islamic pantheons.
I have also heard the term "Christopagan", which is (as I understand it) someone who follows the earth-based spirituality and believes in Christ. This differs from a Christian Witch in that a Christian Witch is a Wiccan who uses the Christian Pantheon. A Christian Witch is a Christopagan, but not necessarily vice versa as Wicca is just one of the many pagan paths.
Not everyone uses a pantheon though. I don't use a pantheon, nor do I follow specific guidelines for rituals, hence I consider myself an eclectic pagan. I found a good definition
online:
"Eclectic Pagans form a large group, consisting of people with widely different religious views. This "denomination" or "group" is not easily definable and one could say that the only feature binding it together is - being eclectic. Very simply put, Eclectic Pagans are Pagans who do not adhere to any given tradition and/or religion, but build their own religious world view out of pieces they have picked from different traditions and/or religions, adding to the mix - when they see a need - features they have developed themselves. Those Eclectics who do consider themselves as belonging to a given Pagan religion, combine features from the different traditions of that religion, often adding also features derived from elsewhere. Many "basic Pagans not belonging to any religion" are some grade of eclectics. Many of them identify themselves simply as "Pagans". Eclectics are often solitary, but there are also eclectic Pagan groups, for example Wiccan covens."
