Board Thread:Warhammer 40k General Discussion/@comment-66.127.213.188-20131127011315/@comment-37.152.33.225-20131127171247

The way I read it, for Zahariel, it was a combination of his psyker abilities and his proximity to Luther when they first discovered the bomb. For Luthor, all his subconcious resentments of the Lion suddenly hit him when he realised he could simply allow the bomb to detonate. As the book says he almost instantly banished the feelings and felt regret and deep sadness that he had even thought of betraying the Lion, even though it was too late and he had betrayed him already with a moment of weakness.

The Lion realises this but finds it hard to accept that his most trusted friend could be capable of betrayl and so banishes him instead of killing him.