He said not ‘old and new,’ as He surely would have said had He not preferred to preserve the order of value rather than of time. But the Manichaeans while they think they should keep only the new promises of God, remain in the old man of the flesh, and put on newness of error.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: City of God, book xx, ch. 4