1 Corinthians 1:18

For the preaching of the cross
Not of the Christian's cross, which he is to take up and bear for the sake of Christ; though this is a doctrine taught by Christ, and his apostles, and found to be true by the saints in all ages; and is what is had in great aversion and contempt, being very disagreeable to the natural man: but of the cross of Christ, the doctrine of salvation by a crucified Christ; or the doctrine of peace and reconciliation by the blood of his cross, and of righteousness, pardon, atonement, and satisfaction by the offering up of himself upon it as a sacrifice for sin, is here intended; and which

is foolishness
in the esteem of many; and that because man's wisdom has no hand either in forming the scheme of it, or in the discovery of it to the sons of men; and besides, being revealed, it is very disagreeable to the carnal reason of man. This way of preaching is very impolite and unfashionable, and therefore despised; it is a doctrine which is not received by the wise and learned, but has been in all ages loaded with reproach, stigmatized either as a novel or licentious doctrine, and attended with persecution; though the only doctrine God owns for conversion, which administers comfort to distressed souls, and is food for the faith of believers; yea, it is a display of the highest wisdom; is what angels approve of, and desire to look into; is wiser than the wisdom of men; it has made foolish the wisdom of this world, and is what is only able to make a man wise unto salvation; and yet this doctrine is accounted foolish, yea foolishness itself; but to whom is it so?

to them that perish.
All mankind are in a lost and perishing condition, by reason of sin, and want of righteousness. There are some who shall not perish; the Father has chose them unto salvation, the Son has redeemed them, and the Spirit sanctifies them; but there are others who do perish in their sins; wicked and ungodly men, Carried away with their own lusts and blinded by Satan, the god of this world: these are they that are lost, to whom the Gospel is hid, and who judge it foolishness; but their judgment of it is not to be regarded, being no more capable to judge of the glory and wisdom of the Gospel, than a blind man is of colours: but unto us which are saved; who are chosen in Christ unto salvation; whose persons and grace are secured in Christ, and in the everlasting covenant; for whom Christ has wrought out salvation; and to whom it is applied by the Spirit of God; and who are kept unto the full enjoyment of it by divine grace: to these

it is the power of God;
organically or instrumentally; it being the means of quickening them when dead in sin, of enlightening their dark minds, of unstopping their deaf ears, of softening their hard hearts, and of enemies making them friends to God, Christ, and his people: and it is likewise so declaratively, there being a wonderful display of the power of God in the ministration of it; as may be seen when observed who were the first preachers of it, men of no figure in life, of no education, illiterate mechanics, very mean and abject; into these earthen vessels were put the treasure of the Gospel, that the excellency of the power might appear to be of God, and not man; as also the doctrine they preached, a crucified Christ, disagreeable to the wisdom of men; the manner in which they spread it, not by force of arms, by carnal weapons, but spiritual ones; moreover, the opposition they met with from rabbins, philosophers, princes, kings, and emperors, and all the states and powers of the world; and yet in how short a time, maugre all opposition, did they carry the Gospel throughout the whole world, to the conversion of millions of souls, and the planting of churches everywhere; and which Gospel has continued and increased, notwithstanding the efforts of persecutors and false teachers, and all the power and artifice of men and devils; all which can be attributed to nothing else but the mighty power of God: add to this, that the Gospel is the power of God in the esteem of the saints, who know it to be so by inward experience; they have felt the power of it on their hearts; it has wrought effectually in them, and therefore they are the best judges, and are capable of giving the best account of it.