The Five Theological Orations, first delivered in AD 379 by Gregory of Nazianzus, one of the three "Cappadocian Fathers" of the early Church, were immediately recognized as a landmark defense of the orthodox doctrine of the holy Trinity. Their historical importance as a decisive blow against the various trinitarian heresies of the fourth century - one from which they would never really recover - is indisputable; but just as obvious is their abiding value for clear-headed thinking, devotional fervor, and reverent humility becoming a genuine man of God. This is edifying reading for all the saints, no less in our day than in Gregory Nazianzen's.