diatribe

…credited with originating the Cynic “diatribe,” or popular discourse on morality, whose style may have influenced that of the Christian sermon. Few of his writings survive.

…much to the Cynic-Stoic “diatribes” (racy sermons in prose or verse) of Greeks such as Bion; but in extant Hellenistic literature he is most clearly presaged by the fragments of Callimachus’ iambs. “Menippean” satire, which descended from the Greek prototype of Menippus of Gadara and mingled prose and verse,…