Caramelattsu,
From your post, I'm assuming you are a Christian, or at the least a follower of the Bible to some extent.
If you are concerned about spirituality in general, I think that you will find your GLO experience only
enhances that side of you. (Assuming it's something you pursue). You'll find many GLO members (and BGLO members) who are strong believers of a variety of religions, etc. In fact, many organizations have "religious" aspects to their rituals, etc.
As for the partying, drinking, etc. Your brothers/sisters should respect your individual beliefs. If you choose not to drink or 'party', they're
not going to force you. In my personal experience, there wasn't a lot of peer pressure among GLO members to drink and party. In fact, many students (members and non-memebers) looked at those who didn't drink with respect. So you can still attend parties, have a great time, etc. without the alcohol or other substances. In fact, many organizations are going "dry" these days.
While partying is usually the most immediate thing you see among GLOs or BGLOs, it's least of their priorities. When you do some research and talk to members, you'll find that each GLO/BGLO has a number of community service and philanthropy events each semester (or quarter). The main purposes of any GLO or BGLO are service to the community and building character of the individuals involved, as well as networking (as Ghostface said).
Also, there
areChristian GLOs. If you do a search on Yahoo! I know you can turn up at least a few of them.
If you have any specific questions regarding the Bible and GLOs, or related questions, please feel free to email me!
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SilverTurtle@greekchat.com
Phi Beta Fraternity
Phi chapter