Acts 2:37

37. It has already been observed, that up to the moment in which Peter arose to address the audience, although the immersion in the Holy Spirit had occurred, and its effects had been fully witnessed by the people, no change had taken place in their minds in reference to Jesus Christ, neither did they experience any emotion, except confusion and amazement at a phenomenon which they could not comprehend. This fact proves, conclusively, that there was no power in the miraculous manifestation of the Spirit, which they witnesses, in itself alone, to produce in them the desired change. All the power which belonged to this event must have come short of the desired effect, but for a medium distinct from itself, through which it reached the minds and hearts of the people. The medium was the words of Peter. He spoke; and when he had announced the conclusion of his argument, Luke says: (37) " Now when they heard this, they were pierced to the heart, and said to Peter and the other apostles, Brethren, what shall we do? " In this exclamation there is a manifest confession that they believe what Peter has preached to them; and Luke's declaration that they were pierced to the heart shows that they felt intensely the power of the facts which they now believed. Since Peter began to speak, therefore, a change has taken place both in their convictions and their feelings. They are convinced that Jesus is the Christ, and they are pierced to the heart with anguish at the thought of having murdered him. In the mean time, not a word is said of any influence at work upon them, except that of the words spoken by Peter; hence we conclude that the change in their minds and hearts has been effected through those words. This conclusion was also drawn by Luke himself; for in saying, "when they heard this, they were pierced to the heart, and cried out," he evidently attributes their emotion and their outcry to what they heard, as the cause of both.

If Luke had regarded the change effected as one which could be produced only by the direct agency of the Holy Spirit, he could not have expressed himself in these words, for his language not only entirely ignores such an influence, but attributes the effect to a different instrumentality. We understand him, therefore, to teach that the whole change thus far effected in these men was produced through the word of truth which they heard from Peter.

Let it be observed, however, that what they had heard concerning Christ, they had heard not as the words of the mere man Peter; for, previous to introducing the name of Jesus, he had clearly demonstrated the inspiration of himself and the other apostles. This being established beyond the possibility of rational doubt, from the moment that he began to speak of Jesus they were listening to him as an inspired man. But the Jews had long since learned to ascribe to the words of inspired men all the authority of the Spirit who spoke through them; hence this audience realized that all the power to convince and to move, that the authority of God himself could impart to words, belonged to the words of Peter. If they could believe God, they must believe the oracles of God which find utterance through Peter's lips. They do believe, and they believe because the words they hear are recognized as the words of God. Faith, then, comes by hearing the word of God; and he who hears the admitted word of God, must believe, or deny that God speaks the truth. This is true, whether the word is heard from the lips of the inspired men who originally gave it utterance, or is received through other authentic channels. The power by which the word of God produces faith is all derived from the fact that it is the word of God.

No words, whether of men or of God, can effect moral changes in the feelings of the hearer, unless they are believed; nor can they when believed, unless they announce truths or facts calculated to produce such change. In the present instance, the facts announced placed the hearers in the awful attitude of the murderers of the Son of God, who was now not only alive again, but seated on the throne of God, with all power in his hands, both on earth and in heaven. The belief of these facts necessarily filled them with the most intense realization of guilt, and the most fearful anticipation of punishment. The former of these emotions is expressed by the words of Luke, "They were pierced to the heart ;" the latter, in their own words, "Brethren, what shall we do? " They had just heard Peter, in the language of Joel, speak of a possible salvation; and the question, What shall we do? unquestionably means, What shall we do to be saved?