Christian texts are becoming more embedded in the cultural and linguistic worlds around the Alexandrians, and their genres reflect that reality. The commentaries and sequences of exegetical homilies which emerge in the third century, particularly with Origen but also Hippolytus, indicate a level of professional attention to the texts that owes something to Jewish precedent but much more to the way in which Hellenistic scholars and philosophers approached the classical texts. Christian literature, however, was not simply concerned to establish Christian identity over against the wider culture and to distinguish it from Judaism. There was also the issue of where the true tradition lay, and Irenaeus' attempt to expose the falsehood of some claims to gnosis was taken up in further compendia which critically detailed the teachings of heretics, such as those of Hippolytus. One aspect of the developing Christian literary culture cannot be ignored: the primary activity of the community which produced it was worship.