1 Corinthians 3:20
“For the Lord,” says he, “knows the reasonings of men that they are vain.” Now when the Wisdom which is boundless pronounces this edict concerning them, and declares them to be such, what other proof do you seek of their extreme folly? For men's judgments, it is true, in many instances fail; but the decree of God is unexceptionable and uncorrupt in every case.
4. Thus having set up so splendid a trophy of the judgment from on high, he employs in what follows a certain vehemence of style, turning it against those who were under his ministry, (ἀρχομένους) and speaking thus:
Source: Homilies on First Corinthians (New Advent)