Charles Spurgeon Commentary Acts 3:24-26

"Yea and all the prophets from Samuel and them that followed after, as many as have spoken, they also told of these days. Ye are the sons of the prophets, and of the covenant which God made with your fathers, saying unto Abraham, And in thy seed shall all the families of the earth be blessed. Unto you first God, having raised up his Servant, sent him to bless you, in turning away every one of you from your iniquities." — Acts 3:24-26 (ASV)

They were to have the first proclamation of the gospel; from among them would be gathered many of the first converts. The preacher did not know immediately what result this sermon produced; it was not like the sermon preached at Pentecost, because he did know what happened after its delivery. This is quite as good a sermon in every way, and we have every reason to believe that as many were converted by it. The Spirit of God was with Peter; yet even the Spirit of God does not always work in the same way on people. You see, the apostles had no opportunity to have a talk with the people afterwards, and to find out what had been done, as they had on the day of Pentecost.