Rereading Mark Stavish’s Egregores prompted me to read the Book of Enoch (aka 1 Enoch) where the term Watcher (egregoros in Greek) is used to describe angels. I was struck that one of the terrible sins of the fallen angels described in Enoch was to teach humans technology. (The other was to have intercourse with women; angels are supposed to be spiritual beings and not be subject to lust.)