John Chrysostom
For a disciple imitates a virtuous master, but goes beyond a vicious one.
This the next charge against them is, that they are unequal to the salvation of many, seeing they need so much labour to bring one to salvation; and not only are they slack in conversion, but destroy even those whom they do convert, by corrupting them by example of evil life.
And that not of compassion from desire to save him whom they taught, but either from covetousness, that the greater number of worshippers might increase the number of offerings made in sacrifice, or out of vain glory. For he who sinks himself in a slough of sins, how should he be desirous to rescue another out of them? Will a man be more merciful to another than to himself? By a man’s actions therefore it may be known whether he seeks another’s conversion for God’s sake, or out of vain glory.
Or, because while he was a worshipper of idols, he observed righteousness even because of men; but when he became a Jew, prompted by the example of evil teachers, he became worse than his teachers.