“Where is the wise? Where is the scribe? Where is the disputer of this world? Hath not God made foolish the wisdom of this world?” asks Paul. And then he declares: “After that in the wisdom of God the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that believe.”

What kind of preaching is this? He does not say, “foolish preaching,” but the foolishness of such a way as that of preaching. Certainly, it is not the moral essay, or the intellectual, or semi-intellectual, kind of preaching that is most generally heard throughout the world to-day, that is to save men; for thousands of such sermons move and convert no one: nor is it a mere noisy declamation called a sermon—­noisy because empty of all earnest thought and true feeling; but it must be the kind of which Peter speaks when he writes of “them that preached the Gospel ... with the Holy Ghost sent down from Heaven” (1 Peter i. 12).

No man is equipped to rightly preach the Gospel, and undertake the spiritual oversight and instruction of souls, till he has been anointed with the Holy Ghost.

The disciples had been led to Jesus by John the Baptist, whose mighty preaching laid a deep and broad foundation for their spiritual education, and then for three years they had listened to both the public and private teachings of Jesus; they had been “eye-witnesses of His glory,” of His life and death and resurrection, and yet He commanded them to tarry in Jerusalem, and wait for the Holy Spirit. He was to fit them for their ministry. And if they, trained and taught by the Master Himself, had need of the Holy Spirit to enable them to preach and testify with wisdom and power, how much more do you and I need His presence!

Without Him they could do nothing. With Him they were invincible, and could continue the work of Jesus. The mighty energy of His working is seen in the preaching of Peter on the day of Pentecost. The sermon itself does not seem to have been very remarkable; indeed, it is principally composed of testimony backed up and fortified by Scripture quotations, followed by exhortation, just as are the sermons that are most effective to-day in the immediate conversion and sanctification of men. “True preaching,” said Horace Bushnell, “is a testimony.”

Peter’s Scripture quotations were apt, fitting the occasion and the people to whom they were addressed. The testimony was bold and joyous, the rushing outflow of a warm, fresh throbbing experience; and the exhortation was burning, uncompromising in its demands, and yet tender and full of sympathy and love. But a Divine Presence was at work in that vast, mocking, wondering throng, and it was He who made Peter’s simple words search like fire, and carry such overwhelming conviction to the hearts of the people.

And it is still so that whenever and wherever a man preaches “with the Holy Ghost sent down from Heaven,” there will be conviction.

Under Peter’s sermon “they were pricked in their hearts.” The truth pierced them as a sword until they said, “What shall we do?” They had been doubting and mocking a short time before, but now they were earnestly inquiring the way to be saved.

The speech may be without polish, the manner uncouth, and the matter simple and plain; but conviction will surely follow any preaching in the burning love and power and contagious joy of the Holy Spirit.

A few years ago a poor black boy in Africa, who had been stolen for a slave, and most cruelly treated, heard a missionary talking of the indwelling of the Holy Spirit, and his heart hungered and thirsted for Him. In a strange manner he worked his way to New York to find out more about the Holy Spirit, getting the captain of the ship and several of the crew converted on the way. The brother in New York to whom he came took him to a meeting the first night he was in the city, and left him there, while he went to fulfil another engagement. When he returned at a late hour, he found a crowd of men at the penitent-form, led there by the simple words of this poor black fellow. He took him to his Sunday-school, and put him up to speak, while he attended to some other matters. When he turned from these affairs that had occupied his attention for only a little while, he found the penitent-form full of teachers and scholars, weeping before the Lord. What the black boy had said he did not know; but he was bowed with wonder and filled with joy, for it was the power of the Holy Spirit.