Don't do it .... RUN!!!!!
To be a Christian, one does not have to belong to any particular denomination.
What denomination was Jesus? He didn't have one, and neither did his disciples, contrary to popular belief. Christianity is a way of life, notedly by doing good things toward your fellow man/woman, from your heart ... and accepting Christ as your salvation to the glory of God.
It isn't a brand. [No middle-men need apply.]