Philo Judaeus De Decalogo 89

[89] with what face can you while sober, and while appearing to be master of yourself look upon your friend, and say, By reason of our acquaintance and companionship, act unjustly, violate the law, commit impiety for my sake; for it is plain that if he heard such a request, he would quickly renounce that companionship which you now believe to exist, reproaching himself for having ever had any friendship at all with a man of such a character as you, and would flee from you, as from a savage, and maddened, wild beast.