Oration 40: On Holy Baptism

Oration 40, On Holy Baptism is the longest of Gregory of Nazianzus's surviving orations, preached in Constantinople at the feast of the Theophany in January 381, the day after his sermon On the Holy Lights. Gregory had come to the capital as a bishop to a small Nicene congregation and now presided over a church in which the Nicene faith was imperially favored. His hearers included many catechumens who, like much of the fourth-century church, had put baptism off indefinitely, treating it as a deathbed insurance rather than the beginning of a Christian life. The sermon is his attempt to end that habit from the pulpit.

Gregory opens by piling up the names of the sacrament: gift, grace, baptism, anointing, illumination, garment of incorruption, washing of rebirth, seal. Each name is a facet of what God does in the water, and the accumulation is itself an argument that something this rich should not be deferred. He then distinguishes several baptisms in Scripture, the figurative baptism of Moses in cloud and sea, the baptism of John unto repentance, the baptism of Christ in the Spirit, the baptism of blood in martyrdom, and the baptism of tears, which is harder than the first because it must be repeated daily. From there the sermon turns to direct confrontation. He names the excuses one by one, waiting for a greater feast, waiting for a bishop rather than a presbyter, waiting to finish one's sins first, fearing to fall after the washing, and answers each with Scripture, with analogy, and with ridicule. A seal of gold and a seal of iron make the same impression; the priest is the instrument, the Trinity is the agent. To the man who wants to sin a little longer, he replies that no one bargains with death. He addresses infants as well, counseling baptism at once where there is danger and otherwise around the age of three, when a child can begin to answer. Near the close he sets out a compact confession of the one divinity in three persons, insisting that the faith professed in the water must be the full Nicene faith, and he ends by walking the candidates through the rite itself, the renunciation facing west, the lamps carried into the church, and the vision of the bridegroom whom the wise virgins go out to meet.

The oration has mattered because it is the fullest patristic treatment of why a Christian should be baptized now rather than later, written at the moment the church was deciding what to do about adult converts who hesitated. Its catalogue of the names of baptism entered later sacramental theology, and its practical advice on infant baptism is among the earliest reasoned positions on the question. It also shows Gregory the preacher at full stretch, moving between doctrine, pastoral pressure, and liturgical instruction without seams.

Who should read this: pastors, catechists, and anyone preparing adults or families for baptism who wants a model of theological seriousness joined to pastoral urgency; students of fourth-century liturgy and sacramental thought. It is not an introduction to Gregory or to Trinitarian doctrine, and readers looking for a calm systematic treatise will find instead a long, insistent sermon aimed at people who have been stalling.