De Paradiso
Ambrose's treatise on the Garden of Eden and the fall of man.
Chapter I (The Six Days of Creation)
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Verse 31: And God Saw All Things That He Had Made, and They Were Very Good
— Cited (ch. 10) on why God did not say "it was good" of Adam alone before Eve's formation
"St. Ambrose gives the fourth reason in his book On Paradise, ch. 10"