According to the course calendar, the course is open to everyone since it has no prerequisites. Here is a list of course outlines for religious studies courses (
http://www.socsci.mcmaster.c a/rels...e/courses.cfm), including Religious Studies 2GG3.
The course is offered in first term, and not in the second, so you can't take it this year. You could look into it as being one of your electives next year though.