The Shepherd of Hermas

When, therefore, you know his deeds, keep from him, and do not trust him, because his deeds are evil and unprofitable for the servants of God. You have, therefore, the workings of both the angels. Understand them and believe the angel of righteousness,

but keep from the angel of wickedness because his teaching is evil in every act. For though a man be faithful, if the thought of that angel rise in his heart, it must be that that man or woman commit some sin.

But again, though a man or woman be very evil, if there rise in his heart the deeds of the angel of righteousness, it must needs be that he do some good act.

You see, therefore, said he, that it is good to follow the angel of righteousness, but to keep away from the angel of wickedness.

This commandment makes plain the things of the faith, that you may believe the works of the angel of righteousness, and by doing them live to God. But believe that the works of the angel of wickedness are bad: by not doing them, therefore, you shall live to God.