This points further toward their inability to procreate with humans. (PDF download and/or read online) Buy a print copy The sexlessness of angels. Table of Contents. Nature of angels. The personality of angels. (2.) Angels appear to be only immaterial beings not material. This helps us to place the unmentioned angels within the Genesisframework. I. AngelologyGood and bad angels. The only uncreated The study of angels is referred to as “angelology”. This name means “Slanderer, Accuser, eiver.” “