Letter 30

Ambrose of MilanHorontianus|c. 385 AD|ambrose milan
From: Ambrose, Bishop of Milan
To: Horontianus
Date: ~377 AD
Context: A continuation of the allegorical interpretation of Genesis, this time addressing the story of Noah, the flood, and the ark as prefigurations of baptism and the Church.

Ambrose to Horontianus — greetings.

Let me continue our conversation about Genesis by turning to Noah and the flood.

The ark is the Church. I say this not as a clever allegory but as a truth taught by the apostle Peter himself: "In the ark a few, that is, eight persons, were saved through water. Baptism, which this prefigured, now saves you" (1 Peter 3:20-21). What the ark was to Noah, the Church is to us — the vessel that carries the faithful through the waters of judgment to the shores of a new creation.

The flood itself is baptism writ large. The old world, corrupted by sin, was washed away so that a new world could emerge. In the same way, the old self is drowned in the baptismal font so that a new self, born of water and Spirit, can rise.

And notice: the ark was built to God's specifications, not Noah's. Noah did not design his own salvation; he obeyed instructions. So too the Church is not a human invention, organized according to human preferences. It is built on the foundation of the apostles and prophets, with Christ himself as the cornerstone (Ephesians 2:20).

Some object: why was the rest of humanity destroyed? This is a hard question, and I will not pretend it is easy. But consider: God waited. He sent Noah to preach. For one hundred and twenty years, the door of the ark stood open. Those who perished were not caught by surprise — they chose not to enter. The mercy of God is patient, but it is not infinite in duration. There comes a moment when the door closes.

Let us be among those who entered, brother, and let us urge others to enter while the door stands open.

Farewell in the Lord.

Modern English rendering for readability. See the 19th-century translation or original Latin/Greek for scholarly use.

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