From William Schaberg's Writing The Big Book, Page 152-153:

Bill's Religious Perspective

... [j]ust how open was Bill in this early version of 'There Is A Solution' to 'nearly every conceivable... shade of belief"? It does not require a careful reading of the text to realize that Wilson is very much a man of his own time, culture and upbringing and when he uses the word "religious" - despite all his protests to the contrary - he was was identifying with a specific concept of God to the exclusion of all others. Whatever  later liberalizations may have been introduced by the substitution of spiritual for religious or by Bill's consistent efforts over the years to open the doors of A.A. ever wider, the open concept claimed for religion here does not embrace a while host of the "varieties" so candidly acknowledged in William James's book, a study that includes investigations into the religious beliefs of Pagans, Hindus, Buddhists, and Sufis (among others). 

   As his language consistently shows, when Wilson uses the word "religious" here, he is talking about the belief in a personal, providential God, very much along the lines of the God of Abraham, who is is to be the ultimate source of salvation for alcoholics. When it comes to recovery, he is not talking, for instance, about the indifferent Creator God of the Deists or about any of the other more liberal concepts of "God as you understand him." Bill Wilson's God is "the Creator of you and me," the "living Creator" and "the living God." He is a God with "a loving and powerful hand"; one who is capable of "entering into our hearts and lives" where He can "accomplish those things which by no stretch of the    imagination were we humanly capable of." This is a God who wholeheartedly offers each of us the opportunity to form a very personal and direct relationship with Him and on whom we can absolutely rely for help to overcome the insanity that precedes the first drink.

   Like almost everything else in the chapter, this conception of God came from Bill Wilson's own personal experience, it is the foundation of a belief system he adopted when he first got sober and it is the one he maintained for the rest of his life. Since Bill's own God was a providential God - one you could pray to with the full expectation of receiving and answer to your prayers - that is the God he explicitly described as the "glorious" solution to the problem of uncontrolled drinking in his first version of "There Is A Solution."