How did Neoplatonism influence St. Ambrose’s Christian teaching?

St. Ambrose incorporated Neoplatonism into his Christian teaching by utilizing the philosophical works of Plotinus to interpret and defend the Bible.1

He employed erudite philosophical allegory to explain the "spiritual" meaning of the Old Testament, particularly in works such as the Hexaëmeron and sermons on the patriarchs. Specific writings, including De Isaac et anima and De bono mortis, demonstrate his deep familiarity with Neoplatonic mystical language.1

By integrating this Greek philosophical tradition, Ambrose provided educated Latins with a sophisticated, classical version of Christianity. This "Catholic Neoplatonism" served as a vital philosophical foundation that influenced his most notable convert, St. Augustine, ultimately helping to transform Christian theology. Although Ambrose remained wary of those who used philosophy to justify impiety, his own sermons frequently reflected the pagan mysticism of Plotinus.21