Whether all the sins of men are due to the devil's suggestion?

❌ Objection 1 : It would seem that all the sins of men are due to the devil's suggestion. For Dionysius says (Div. Nom. iv) that the "crowd of demons are the cause of all evils, both to themselves and to others."

❌ Objection 2 : Further, whoever sins mortally, becomes the slave of the devil, according to Jn. 8:34: "Whosoever committeth sin is the slave [Douay: 'servant'] of sin." Now "by whom a man is overcome, of the same also he is the slave" (2 Pt. 2:19). Therefore whoever commits a sin, has been overcome by the devil.

❌ Objection 3 : Further, Gregory says (Moral. iv, 10) the sin of the devil is irreparable, because he sinned at no other's suggestion. Therefore, if any men were to sin of their own free-will and without suggestion from any other, their sin would be irremediable: which is clearly false. Therefore all the sins of men are due to the devil's suggestion.