Now when they saw the boldness of Peter and John, and perceived that they were unlearned and ordinary men, they marveled; and they took knowledge of them, that they had been with Jesus.
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George Leo Haydock
AD 1849
The constancy of Peter and John, surprised the council very much. They admired their knowledge of the Scriptures, seeing them men without learning or letters, and (as they are called idiots) they could not find how to contradict the fact, the man that was healed, being there present. (Witham)
Here, with the Jewish people, you may admire the constancy, wisdom, and learning of the apostles, after the coming of the Holy Spirit, who, before that event, were simple, unlettered, and timorous men. See ver. 19; and again, Chap. v. 29.
seeing the constancy of Peter and John:
For not only their words; their very bearing showed it; that they should stand there so intrepidly to be tried in a cause like this, and with uttermost peril impending over them! Not only by their words, but by their gesture also, and their look and voice, and, in short, by everything about them, they manifested the boldness with which they confronted the people.
having verified that they were men without letters or learning:
The two unlearned men beat down with their rhetoric them and the chief priests. For it was not they that spoke, but the grace of the Spirit.
And they recognized that they had been with Jesus:
he means, in His Passion: for only these were with Him at that time, and then indeed they had seen them humble, dejected: and this it was that most surprised them: the greatness of the change.
having verified that they were men without letters or learning:
They were called 'without letters' who were content with only their own language and natural knowledge, and did not know the study of letters.