Board Thread:Warhammer 40k General Discussion/@comment-24332685-20140106171610/@comment-25869775-20150101003501

I couldn't have explained it better Vincent the Mad. It seems to me like a probable explanation.

For more information see the Flight of the Esenstine (or whatever it is). It was also these Death Guard loyalists who first start to regard the Emperor as a God among the loyalist side of the Horus Heresy! Proto Inquisition material for sure.