2:4 And my speech and my preaching [was] not with enticing words of man's wisdom, {2} but in {d} demonstration of the Spirit and of power:
(2) He turns now to the commendation of his ministry, which he had granted to his adversaries: for his strength and power, which they knew well enough, was so much the more excellent because it had no worldly help behind it.
(d) By demonstration he means such a proof as is made by reasons both certain and necessary.
2:4 Not with enticing words of man's wisdom. He did not resort to the arts and enticements of Greek oratory or philosophy.
But in demonstration of the Spirit and of power. Filled by the Holy Spirit, he spoke in its power, and thus moved upon the hearts of his hearers. His words were also supported by the power of the Spirit shown in miracles (Ro 15:19 2Co 12:12).
2:4 And my speech in private, as well as my public preaching, was not with the persuasive words of human wisdom, such as the wise men of the world use; but with the demonstration of the Spirit and of power - With that powerful kind of demonstration, which flows from the Holy Spirit; which works on the conscience with the most convincing light, and the most persuasive evidence.
2:1-5 Christ, in his person, and offices, and sufferings, is the sum and substance of the gospel, and ought to be the great subject of a gospel minister's preaching, but not so as to leave out other parts of God's revealed truth and will. Paul preached the whole counsel of God. Few know the fear and trembling of faithful ministers, from a deep sense of their own weakness They know how insufficient they are, and are fearful for themselves. When nothing but Christ crucified is plainly preached, the success must be entirely from Divine power accompanying the word, and thus men are brought to believe, to the salvation of their souls.