You might want to look up the "Gods" tag to find stories you'd like. I've written at least one story like this -
Scions is almost fully-published here on Scribble Hub. It's a medieval fantasy story about a man chosen by the goddess, Astrilla, to act as her Scion and protect the world from the incarnation of an evil god. It involves sword and sorcery, incredible powers, a few massive battles, romance, and (like many of my stories) is a gender-bender.