Philoxenus of Mabbug

And moreover we may see the cunning of Cain from the outlet which he found for his wickedness, for when he meditated slaying Abel his brother, and was not able to do it because he was near unto his parents, he said "Let us go down into the plain;" and Abel, in his innocency, heard and was persuaded like a child. And his simplicity imagined not wickedness, and he did not consider in his heart why Cain called him to the plain, neither did he perceive Cain's hatred towards him, because simplicity knoweth not how to be a spectator of these things; but in the innocency of his heart and in brotherly love towards him he turned, and whithersoever he called him he went readily and obediently. And observe here also the works of simplicity, and have regard unto the injurious effects of cunning and wickedness, and be strenuous to be on the side of the simple, who have at all times pleased God; and reject cunning as something which is unfit for thee, and which is not meet for the discipleship in which thou standest.