Contra Adimantum
Augustine's refutation of Adimantus, a Manichaean disciple, on contradictions between the Old and New Testaments.
Chapter I (The Six Days of Creation)
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Verse 26: Let Us Make Man in Our Image and Likeness
— Cited (ch. 5) on distinguishing image and likeness
"The same is taught by St. Augustine, book Against Adimantus, chapter 5"