World Wide Study Bible
a Bible passage
The dullard cannot know,
the stupid cannot understand this:
6 The foolish man shall not know them. This is added with propriety, to let us know that the fault lies with ourselves, in not praising the Divine judgments as we ought. For although the Psalmist had spoken of them as deep and mysterious, he here informs us that they would be discerned without difficulty, were it not for our stupidity and indifference. By the foolish, he means unbelievers in general, tacitly contrasting them with believers who are divinely enlightened by the word and Spirit. The ignorance and blindness to which he alludes have possession of all without exception, whose understandings have not been illuminated by Divine grace. It ought to be our prayer to God, that he would purge our sight, and qualify us for meditation upon his works. In short, the Psalmist vindicates the incomprehensible wisdom of God from that contempt which proud men have often cast upon it, charging them with folly and madness in acting such a part; and he would arouse us from that insensibility which is too prevalent, to a due and serious consideration of the mysterious works of God.