1:17-25 Paul had been bred up in Jewish learning; but the plain preaching of a crucified Jesus, was more powerful than all the oratory and philosophy of the heathen world. This is the sum and substance of the gospel. Christ crucified is the foundation of all our hopes, the fountain of all our joys. And by his death we live. The preaching of salvation for lost sinners by the sufferings and death of the Son of God, if explained and faithfully applied, appears foolishness to those in the way to destruction. The sensual, the covetous, the proud, and ambitious, alike see that the gospel opposes their favourite pursuits. But those who receive the gospel, and are enlightened by the Spirit of God, see more of God's wisdom and power in the doctrine of Christ crucified, than in all his other works. God left a great part of the world to follow the dictates of man's boasted reason, and the event has shown that human wisdom is folly, and is unable to find or retain the knowledge of God as the Creator. It pleased him, by the foolishness of preaching, to save them that believe. By the foolishness of preaching; not by what could justly be called foolish preaching. But the thing preached was foolishness to wordly-wise men. The gospel ever was, and ever will be, foolishness to all in the road to destruction. The message of Christ, plainly delivered, ever has been a sure touchstone by which men may learn what road they are travelling. But the despised doctrine of salvation by faith in a crucified Saviour, God in human nature, purchasing the church with his own blood, to save multitudes, even all that believe, from ignorance, delusion, and vice, has been blessed in every age. And the weakest instruments God uses, are stronger in their effects, than the strongest men can use. Not that there is foolishness or weakness in God, but what men consider as such, overcomes all their admired wisdom and strength.

21. after that—rather, "whereas."

in the wisdom of God—in the wise arrangement of God.

world by wisdom—rather, "by its wisdom," or "its philosophy" (Joh 1:10; Ro 1:28).

knew not God—whatever other knowledge it attained (Ac 17:23, 27). The deistic theory that man can by the light of nature discover his duty to God, is disproved by the fact that man has never discovered it without revelation. All the stars and moon cannot make it day; that is the prerogative of the sun. Nor can nature's highest gifts make the moral day arise; that is the office of Christ. Even the Jew missed this knowledge, in so far as he followed after mere carnal world wisdom.

it pleased God—Paul refers to Jesus' words (Lu 10:21).

by the foolishness of preaching—by that preaching which the world (unbelieving Jews and Gentiles alike) deem foolishness.

save them that believe—(Ro 1:16).