John Gill's Bible Commentary Ver. 5. O ye simple, understand wisdom , etc.] The Gospel, the wisdom of God in a mystery, particularly the doctrine of salvation by Christ; it is the highest wisdom to know Christ and him crucified: and they are “the simple” who are weak and easy to be imposed upon, who are here called unto; and generally speaking such are they to whom the mysteries of grace are made known, while they are hid from the wise and prudent; and ye fools, be of an understanding heart ; or “cause the heart to understand”; or “get an understanding heart” f211 ; make use of all means to get spiritual wisdom and understanding; all men, let them be what they will in other respects, are fools as to a spiritual and experimental knowledge of divine things; and that man can only be said to have truly an understanding heart that knows his own folly, the plague of his heart, his need of Christ, the worth of him; and has an understanding given him to know him and his interest in him.
Matthew Henry Commentary
Verses 1-11 - The will of God is made known by the works of creation, and by the consciences of men, but more clearly by Moses and the prophets. The chief difficulty is to get men to attend to instruction. Yet attentio to the words of Christ, will guide the most ignorant into savin knowledge of the truth. Where there is an understanding heart, an willingness to receive the truth in love, wisdom is valued above silve and gold.
Original Hebrew הבינו995 פתאים6612 ערמה6195 וכסילים3684 הבינו995 לב׃3820