HistoricalChristian.Faith

John Chrysostom on the Historicity of Noah's Flood

Dates: c. 388 (the Homilies on Genesis, preached at Antioch; d. 407) · Wikipedia
Summary: In his Homilies on Genesis Chrysostom reads the Flood in the Antiochene literal-historical key: he praises the precision (akribeia) of the narrative, which fixes not only the year of the deluge but its month and day; he treats the dated chronology, the 120-year reprieve, the 40 days of rain, the ark's being shut "from the outside," and the total annihilation of all flesh as real events in real time, expounded for the moral profit of his hearers. Where the text speaks of God's "floodgates of heaven" he reads divine considerateness (synkatabasis) — Scripture describing a real act "in a human manner" — not a denial of the act. He polemicizes against the fanciful reading of "sons of God" as angels, insisting on the historical Sethites. Throughout, the figure and the moral are drawn from the history, never put in its place.

Claims & evidence

The "precision" of Scripture: it fixes the year, month, and day of the deluge

See the precision of Scripture, how it not only taught us the year of the deluge but also made clear the month and the day.

— Homilies on Genesis 25.10 (on Gen 7:11), Robert C. Hill trans., cited at creation.com. Akribeia — exactness — is the hallmark Chrysostom prizes in the narrative. That the text dates the Flood "in the six-hundredth year of Noah's life, in the second month, the twenty-seventh of the month" is for him evidence of its character as a record of fact: a fable does not trouble to give the day. The same note recurs on Gen 7:21, where he commends Scripture's "fidelity to its characteristic precision" in itemizing exactly what perished.

God's "floodgates of heaven" is considerate speech about a real act, not myth

See the extent of the considerateness Sacred Scripture employs here too, describing everything in a human manner: it is not that there are sluice gates in heaven, but rather that it describes everything in terms customary with us, as if to say that the Lord simply gave a direction and immediately the waters obeyed their Creator's command, fell out of the heavens on all sides and inundated the whole world.

— Homilies on Genesis 25.10 (on Gen 7:11), Hill trans., cited at creation.com. This is the Antiochene move that is easily mistaken for "allegory": Chrysostom denies that there are literal gates in the sky, but the thing he is glossing — that "the waters obeyed their Creator's command… and inundated the whole world" — he affirms flatly as the event. Synkatabasis, God's considerate accommodation to human speech, explains the idiom of the verse without dissolving the deluge it reports.

The 120 years (Gen 6:3) and the 40 days of rain were spans granted for repentance

God grants them 120 years so that they can erase their sins by conversion to a better way of life and avoid experiencing punishment.

— Homilies on Genesis 21 (on Gen 6:3), Hill trans., cited at the Patristic Bible Commentaries archive. With Jerome and against the Josephan tradition (Clement, Ephrem, Hippolytus) that read the 120 years as a new cap on the human lifespan, Chrysostom reads them as a reprieve: a real interval of grace in which a real generation might repent. He presses the same logic onto the 40 days of rain — God could have drowned the world "in one downpour," but stretched the catastrophe out so that "at least some of them might come to their senses and escape that utter ruin… that he might remove from them any grounds for excuse" (quoted in full below). The chronology is exact precisely because it is a moral economy played out in time.

The fact, too, that he brought on the deluge for forty days and nights is a further wonderful sign of his loving kindness. His purpose in his great goodness was that at least some of them might come to their senses and escape that utter ruin, having before their eyes the annihilation of their peers and the destruction about to overwhelm them… His reason for extending it for forty days was that he might remove from them any grounds for excuse. You see, had it been his wish and command, he could have submerged everything in one downpour. Instead, out of fidelity to his characteristic love he arranged for a stay of so many days.

— Homilies on Genesis 25.11 (on Gen 7:12), historicalchristian.faith.

"The Lord God shut the ark from the outside" — considerateness toward Noah

The text goes on, "The Lord God shut the ark from the outside." Notice in this place too the considerateness in the expression "God shut the ark from the outside," to teach us that he had ensured the good man's complete safety. The reason for adding "from the outside" to "he shut" was that the good man might not be in the position of seeing the disaster occur and suffering even greater distress. I mean, if he brooded over that terrible flood and set indelibly in his mind the destruction of the human race, the complete annihilation of all brute beasts and the disappearance, as it were, of people, animals and the earth itself, he would have been disturbed and anguished.

— Homilies on Genesis 25.12 (on Gen 7:16), historicalchristian.faith. Chrysostom mines the single LXX detail "from the outside" for pastoral psychology — God spares Noah the sight of the drowning world. The reading only works if the drowning world is real: the tenderness he finds in the verse is tenderness about an actual catastrophe Noah would otherwise have watched.

The waters annihilated all flesh; only those in the ark were saved

So Scripture narrates this not simply to teach us the flood level but that we may be able to understand along with this that there was absolutely nothing left standing—no wild beasts, no animals, no cattle—rather, everything was annihilated along with the human race. Since it was for their sake that all these creatures had been created, with the imminent destruction of the human beings it was fitting that these creatures too should meet their end. Then, after teaching us the great height reached by the flood waters… it further adds out of fidelity to its characteristic precision, "There perished all flesh that moved on the earth"… its purpose was to teach us that while others perished, the just man with everyone in the ark alone was saved.

— Homilies on Genesis 25.20 (on Gen 7:21), historicalchristian.faith. The destruction is anthropologically total — "everything was annihilated along with the human race" — and the beasts perish with humanity because they had been made "for their sake." Chrysostom takes the inventory of the dead (birds, animals, reptiles, every human) as the text's own insistence that the judgment was carried out to the letter, with the eight in the ark "alone" excepted.

"God was mindful of Noah" — and his care reached the animals in the ark

See how God did everything out of his esteem for the human being. As in the case of the destruction of human beings in the flood he destroyed also along with them the whole range of brute beasts, so in this case too, when he intends to show his characteristic love for the good man… he extends his goodness to the animal kingdom as well… "God was mindful of Noah," the text says, "and of all the wild beasts, all the cattle and all the reptiles that were with him in the ark. God sent a wind upon the earth, and the water subsided."

— Homilies on Genesis 26.10 (on Gen 8:1), historicalchristian.faith. The receding of the waters is read the same way as their coming: an act of God in history, governed start to finish by his regard for the one righteous man and, through him, for the creatures preserved with him.

"Sons of God" were the Sethites, not angels — confuting the fanciful reading

You see, there is need to make a careful study of this passage and confute the fanciful interpretations of those people whose every remark is made rashly… they claim that this remark is made not about human being but about angels; these (they say) he called sons of God… Is it not a particular hallmark of folly to claim that angels descended to have intercourse with women… So since these people took their origin from Seth… those descended from him in the future were called sons of God by Sacred Scripture for the reason of their imitation of the virtue of their ancestors… On the other hand, he gave the name sons of men to those born after Seth, the descendants of Cain.

— Homilies on Genesis 22 (on Gen 6:2), Hill trans. (FOTC), Google Books; see also historicalchristian.faith. Here Chrysostom polices the literal-historical sense from the other side: the "fanciful" reading he rejects is the mythologizing one (angelic miscegenation, behind the Watchers/Nephilim tradition). His Flood has no fallen angels in it — only the historical line of Seth, virtuous and then corrupted, and the line of Cain. The narrative is kept inside ordinary human history.

Notes

Chrysostom is a textbook case of the argument Allegory was layered on history, not a denial of it (assessment: sound) — and a useful corrective to a too-tidy "Antiochene = literal, Alexandrian = allegorical" map. His synkatabasis ("describing everything in a human manner," the "floodgates" that are not literal sluice gates) shows that even the great Antiochene literalist read the idiom of the narrative figuratively while affirming the event without reserve. The figure qualifies the wording; it never replaces the history.
He anchors the patristic end of the historic-consensus thesis (assessment: sound): a late-fourth-century preacher expounding the Flood, week by week, as datable fact — year, month, and day — before a large urban congregation, with the historicity simply assumed and the akribeia of the record positively celebrated.
On extent he bears on geographic globality vs. anthropological universality (assessment: contested): his stress falls on the anthropological totality — "everything was annihilated along with the human race," the eight in the ark "alone" saved — while the "floodgates… inundated the whole world" and "fifteen cubits above the mountains" carry the geographic picture as the period's default, not as a separately argued thesis.
His reading of the 120 years as a span for repentance (with Jerome, against Josephus, Clement, Ephrem, and Hippolytus, who made it a lifespan cap) and of the 40 days as the same mercy stretched out, makes the Flood a moral economy enacted in real time — the exact chronology he praises is the skeleton of a real story of warning, delay, and judgment, echoing the New Testament's "Noah, a preacher of righteousness" (2 Pet 2:5).