The only difference from Christian terms is that it was his own choice. He regrets the crimes he has committed, he started to regret in his last incarnation already. Remember unlocking that puzzle where he united with his previous incarnations (was it prhere in the brothel). So, in other words he sentenced himself into eternity in Blood War (or Hell). I donno though, if he will be able or even permitted to leave the war one day when eternity of his payback is over. Time and fate are his punishers and there is a place on the planes reserved for ones such as him.
Mathematically, as the time goes further or reaches towards eternity, his stay at that war reaches towards 0, but never gets to it.
Beleiving FFG words this can be over one day, but this can be only hope of the heart in love and in hope. She will look for him everywhere and who knows if she will find him.
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Grace
"I *will* find you again, no matter where in the Lower Planes you will be - just as you shall be able to find me.
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As for Adahn, I have never succeeded in bringing him. You mentioned high Wisdom was needed to make it possible.