I've been a fan since the old days, so as a teenager and young adult I had observed him along the way and a fan who was inspired to understand God due to MJ making God very simple from what I would read about him. In one article, the 1980/81 Ebony or Jet, sorry, (may be on Jetzi's site of periodicals about MJ)
he gave me the biggest key to the basis of who and what God is when he said, (and I'm so very paraphrasing) that whereever he is he tells God when He (God) has done an amazing job on something like seeing a butterfly and saying to God, "Wow God, look how you did those wings, or wow God, what an amazing sunset you have made" I think those were the examples MJ used and it got me to realize what it means to truly "praise God' and deepened my appreciation for the Creator as the Creator. Michael was inspired by all of creation and drew inspiration from nature in every form, including the people who come to the planet and are in their most natural state, children, which inspired me also.
He went to Kingdom Halls in every city he visited during the Thriller era and at the time there were many articles here and there about it quoting him as talking about how he drew a great deal of grounding from the members of those congregations because (and from what I know from personal experience) they were very focused on God and not on him per se as he was just another member who had to do all the things necessary to remain in good standing etc.
That is a place where they study the bible citing various scholars that support their choices of interpretations.
Jehovah's Witnesses believe that Jesus is The Great Teacher,that Jesus is the Son of God and that we are to follow Jesus' example.
It was also talked about in the old days that his mother, Katherine used to love to play songs by Mahalia Jackson, who mostly sang Baptist hymns which are very deeply moving and spiritual in nature.
He also seem to have opened himself up to a more metaphysical outlook seeing the relationship between the mind and the physical reality. This was around the time he wrote songs like, Mind is the Magic and hanging out with different types of people of varied beliefs like, Uri Geller, the spoon bender with his mind, and Jewish Rabbi Schmuley and seems to have at least looked briefly at Islam, Nation of Islam (slightly different teachings) and earlier with LM, Scientology, and I believe his book of poetry, Dancing the Dream reflects that he was exposed to a number of spiritual expressions, but I believe MJ worshiped the creative spirit above all because I believe he was amazed and inspired by it and that creative spirit being the spirit of God. That's the impression I always got.
At the end of the day MJ always used Jesus as the example to follow and he seemed, all the way up to the end, to try to do just that.
Some fans talk about how he 'accepted Jesus' during his last months on earth. I personally believe he already had accepted Jesus long ago. At the same time, he seem to have tried to be all inclusive.