User blog comment:General MGD 109/Who's the strongest demon/@comment-90.185.135.171-20120510204052/@comment-3045936-20120510212451

Alastiar cannot be killed by the knife, but it causes him pain when he was stabbed, kind of like borax for the Levianthans. And yes Lucifer said he was one of the five things in all of creation that cannot be killed by the Colt. We don't know if he meant God and the Archangels which is five. Or five total collective groups like God, Angels all none Archangels, Archangels, the Horsemen which includes Death, and if he knew of the Levianthans or some other kind of groups like pagan deities.