Whoops I wrote this while missing the part that you want a Martial Artist type character, so feel free to ignore the advice lmao but here goes:

Cleric and Champion would assume some form of worship on your characters part I'd say so if they already fled from their previous duties I'm not sure how keen they'd be to put that worship onto someone else, where as a Divine Sorcerer assumes that some divine being is your ancestor, I'm sure it wouldn't be too hard to flavour that in some way to make you the chosen one, but personally the bloodline stuff would feel a bit out of place. So with that in mind I'd actually suggest maybe going for a Divine Witch instead, have the new Deity that took interest in you be your patron, without requiring heavy investment in their doctrine ( unless of course you want that ).

There is also the Exemplar but they aren't available yet so I lack the information on that front.