4:5-14 Peter being filled with the Holy Ghost, would have all to understand, that the miracle had been wrought by the name, or power, of Jesus of Nazareth, the Messiah, whom they had crucified; and this confirmed their testimony to his resurrection from the dead, which proved him to be the Messiah. These rulers must either be saved by that Jesus whom they had crucified, or they must perish for ever. The name of Jesus is given to men of every age and nation, as that whereby alone believers are saved from the wrath to come. But when covetousness, pride, or any corrupt passion, rules within, men shut their eyes, and close their hearts, in enmity against the light; considering all as ignorant and unlearned, who desire to know nothing in comparison with Christ crucified. And the followers of Christ should act so that all who converse with them, may take knowledge that they have been with Jesus. That makes them holy, heavenly, spiritual, and cheerful, and raises them above this world.

13-17. perceived that they were unlearned and ignorant men—that is, uninstructed in the learning of the Jewish schools, and of the common sort; men in private life, untrained to teaching.

took knowledge of them that they had been with Jesus—recognized them as having been in His company; remembering possibly, that they had seen them with Him [Meyer, Bloomfield, Alford]; but, more probably, perceiving in their whole bearing what identified them with Jesus: that is, "We thought we had got rid of Him; but lo! He reappears in these men, and all that troubled us in the Nazarene Himself has yet to be put down in these His disciples." What a testimony to these primitive witnesses! Would that the same could be said of their successors!