The phrase "A Power Greater" was the only change of wording in the Twelve Steps from its original writing. The first writing of the Twelve Steps, which began in an Oxford Bible Study and which birthed AA, read "God" instead of "A Power Greater." The change was made because of the stigma that alcoholics had in the 1930's. To be an alcoholic was very shaming at this time in history. For the alcoholic to go to "God" with his shame was very difficult so the writers of the Twelve Steps made the phrase "A Power Greater" instead to give the alcoholic a little time to develop a God concept. The support groups allow God to patiently reveal Himself to them.  Christians can begin to use Christ in their recovery. Bringing Christ into your recovery is also a process, but is necessary for you to effectively walk through your recovery journey.