28. When you carefully distinguish the works of the flesh from the works of the Spirit, you will not find in all the works of the false prophets a single spark of the Spirit. In the first place, you will certainly not find any true fruits of faith or works of love among them. But you will find, that they are very friendly among themselves and call each other brethren; but this is nothing but poison and the devil within them. For whatever does not belong to their faction, they have no mercy, no patience or friendliness; but if they could, they would destroy them body and soul in an hour or a moment. Flesh and blood do not see the fruits, hence in the meantime they of course wear their gray frocks, are a quiet order and observe the same customs and principles.
Luther's Sermons, Lenker, Volume IV
The Eighth Sunday after Trinity, Third Sermon
