Hi @CrossBones, You certainly came to the right forum to ask for help. Sadly, instead of shutting their trap because they don't want to believe in God and have a warped sense of who and what God is, you're going to receive a lot of venomous comments. I think "freeworld" gave you a very good list of the churches and their affiliation in his comment. There is also the Bangkok International Christian Church, which is located at 2089 Sukhumvit. (I know nothing about them. I just stumbled on to their facebook page because I was looking for the name of a church that I thought was on Sukhumvit Soi 6, which I had attended when I first arrived 26+ years ago. Maybe I'm confusing it with the one on Soi 10.) Anyway, at the time (and now) I live(d) too far from that area to catch a cab to get into town and back (I'm in East Lam Luk ka now) on a Sunday morning (or any time for that matter).
I wish you the best in your search and take care.
Google is you friend.