You can always post here for support. And, maybe you should look up an old friend that used to always be there for you and bounce your situation off them. Many times it's good to get an outside opinion. They are unbiased and can see everything more clearly than the ones in the midst of it all.
I will say my sister encouraged me a lot at the beginning. She was probably my greatest supporter. Then, there is a guy at work who has been through the wringer with divorce who I have consulted with a lot. He understands where I'm coming from since his ex wife is a lot like my stbx husband.
If your church can't support you for getting a divorce, then shame on them. We are all sinners. Including those that run churches. I can see them not tolerating adultery, but a divorce is necessary in many occasions. They can't condemn you for that!
One of my problems that lead to my divorce was not talking about my marital problems with friends all along. Yes, they all seemed so happy in their lives. But it turns out, they all have their own crap going on that they deal with. No one's life is perfect. Please don't rule out talking to your "happy friends" just because they seem happy.
You could also consider finding a counselor. They might even have them at your church. That's a great source of strength during a divorce.
Sorry you're in this situation. There are many others here who will empathize, sympathize and whatever else you need with you.