There are other Protestant scholars who also partially defend the historical Catholic position about "Rock." Taking a somewhat different approach from Cullman, they point out that the Gospel of Matthew was not written in the classical Attic form of Greek, but in the Hellenistic Koine dialect in which there is no distinction in meaning between "petros" and "petra". Moreover, even in Attic Greek, in which the regular meaning of "petros" was a smallish "stone," there are instances of its use to refer to larger rocks, as in Sophocles, "Oedipus at Colonus" v. 1595, where "petros" refers to a boulder used as a landmark, obviously something more than a pebble. In any case, a "petros"/"petra" distinction is irrelevant considering the Aramaic language in which the phrase might well have been spoken. In Greek, of any period, the feminine noun "petra" could not be used as the given name of a male, which may explain the use of "Petros" as the Greek word with which to translate Aramaic "Kepha".