I'm an enthusiastic agnostic meaning that I'm not sure if there's a god but if there is that would be great. I'm certainly no expert on the Bible, but I was raised as a Christian. I don't think gambling is a sin unless it's done to excess because if something is done to excess then inevitably someone gets hurt. Alot of people out there gamble and have fun doing it. That's it for them. It's just a good time like spending money on a movie or a ballgame. No difference for those people. Some people develop addictions to gambling not unlike addictions to alcohol or other drugs. These people are hurting themselves and others in their lives. That sounds like a sin to me. Is wine inherently bad. Is wine a sin? We know that wine drinking went on in the Bible. Was it a sin? Depends on the person drinking the wine.