I would not normally reply to a thread that has seemed to die out, but I am compelled here by my promise under the 12th Step of CoDA to reach out to anyone who may be in or considering a 12 Step group. In short, they work and are very aligned with Christian principles.
I completely agree with @LBD. The whole point of Step 1 is to get people to realize that as humans, we are powerless over our addictions / emotions / reactions to certain things depending on the group you are in. It brings you to the point where you realize you need a higher power to get you into recovery because you can't do it without that higher power. That's Step 2. Step 3 is about learning to surrender to the higher power.
In many groups, particularly those run from a church, that higher power is God not because the people in the group push it (there are no leaders, being run by group consensus), but because many of the people in the group have been called by God and are examples to the others.
That's completely in line with Biblical teaching whether or not it's got the Christian label on it. In some areas, it's hard to find the 12 Step group that you need, and I would hate for anyone here to shy away from a 12 Step group just because they read here that the ones without the Christian label aren't as good.
They are tried and true for over 80 years now, and they work if you follow your program on top of adequate medical care. Joining a 12 Step group, more than anything else, was the #1 indicator (from my Christian behavioral health center) for patients actually making a recovery. It's everything.
Plus, I myself watched people go from atheists to strong Christians as a result of Step 2 and beyond. Without a Christian label on the group name. He's everywhere, not just in churches.
If you are reading this and are considering joining a 12 Step group, any group, feel free to DM me. I take my vow of anonymity seriously, and I can get you on the right track. As we say, the program works if you work it.