"The Sacred Writings Of ..." provides you with the essential works among the Early Christian writings. The volumes cover the beginning of Christianity until before the promulgation of the Nicene Creed at the First Council of Nicaea.

Gregory of Nazianzus (c. 329 - January 25 389 or 390) (also known as Gregory the Theologian or Gregory Nazianzen) was a 4th-century Archbishop of Constantinople. He is widely considered the most accomplished rhetorical stylist of the patristic age. As a classically trained orator and philosopher he infused Hellenism into the early church, establishing the paradigm of Byzantine theologians and church officials. (courtesy of wikipedia.com)

This edition comprises 24 of his orations as well as many letters.