This opinion, however, is held by most, that the devil was an angel, and that, having become an apostate, he induced as many of the angels as possible to fall away with himself, and these up to the present time are called his angels.
OrigenThen, in the next place, we must know that every being which is endowed with reason, and transgresses its statutes and limitations, is undoubtedly involved in sin by swerving from rectitude and justice.
Origen