Job xli. 24, Sept.; xli. 15:  ἡ καρδία αὐτοῦ…ἕστηκεν ὥσπερ ἄκμων ἀνήλατος.  These statements concerning the Devil seem to be directed against Origen’s opinion (De Principiis I. 2), that the Angels “who have been removed from their primal state of blessedness have not been removed irrecoverably.”  The question is discussed, and the opinions of several Fathers quoted, by Huet, Origeniana, II. c. 25.