Hmmm, yeah, I think my knight's answer to the honour of combat is that there is precious little to be gained. Imo the battle against the stronger cult was defined by he and his fellow Knight flying, angelic style, over to the otherwise out of reach altar and taking a half dozen smites but saving the hostage - and getting a fleeting glimpse of the god of nihilism itself. The slaying of the cultist leader was anticlimactic by comparison.
Outside of character we don't beat each other up at all. Basically our characters are going to continue to rock so long as we keep trying. There is 100% certainty of my fallen Knight picking himself up and kicking butt, and within a couple of sessions cuz too long sucks. But in character, during the years interlude he has to scrub up and make the changes.
Next session we are going to finish our crushing of the lesser cult and he is going to fall. I'm gonna play him angry at first, yelling demands, then like a teary baby blubbing, and then crazy denial like he's deluded himself into thinking he's still blessed. Then finally he'll become penitant and head off to deal with it.
I've always thought that higher level characters have to deal with all manner of crises, you know, alignment changes, level loss, lost stuff etc.. But highest level characters get there by perservering.