Ambrosiaster : Knowing that their thoughts are vain, God rebukes their wisdom in order to prove that they are foolish, showing that what they thought was false is true and vice versa. — COMMENTARY ON PAUL'S EPISTLES John Chrysostom : Next, he declares also the mode in which God took them, adding another testimony: "For the Lord," saith he, "knoweth 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 dost thou 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. — Homily on 1 Corinthians 10 Pelagius : The thoughts of the wise contribute nothing to a person's salvation. — COMMENTARY ON THE FIRST EPISTLE TO THE CORINTHIANS 3