Wikipedia can be used in the beginning stages of research to get an overview of a topic, but should never be cited as an authoritative source in scholarly work. If you use Wikipedia, you must verify the obtained information using other authoritative resources.
Google is a natural starting point for information search, but not always a good path for scholarly research. Here is a good overview of its strengths and weaknesses.
Use this custom Google search to locate articles concerning religious studies published in over 350 open access journals.