A human dies on Earth and is given the opportunity to continue living in a different universe with a different God. He materializes in Equestria as an already mature equine and begins his new live meeting his new God/Princess Celestia. The story will most likely become mature in later chapters (if not sooner). The story is not completely written/thought out but have about 10K words written out in rough draft to be edited and posted if there is interest.
I do not own My Little Pony, this is a non-profit work of fiction.

cover from http://mlp.wikia.com/wiki/Equestria
imaged is (poorly) edited

Note: The Gary Stu Alicorn introduced early in the story DIES quickly, so don't let him turn you off the story. lol