Or, He taught natural righteousness, those things which natural reason teaches, as chastity, humility, and the like, which all men of themselves see to be goods. Such things are necessary to be taught not so much for the sake of making them known as for stirring the heart.
For beneath the prevalence of carnal delights the knowledge of natural righteousness sleeps forgotten. When then a teacher begins to denounce carnal sins, his teaching does not bring up a new knowledge, but recalls to memory one that had been forgotten. But He preached the Gospel, in telling of good things which the ancients had manifestly not heard of, as the happiness of heaven, the resurrection of the dead, and the like.
Or, He taught by interpreting the prophecies concerning Himself; He preached by declaring the benefits that were to come from Himself.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).