William Burkitt on Acts 3:25

Still observe, How sweetly St. Peter invites and encourages these murtherers of Christ to repentance; the worst of men must neither be driven to despair, nor to be too hastily despaired of. He tells them, they were the posterity of Abraham, Isaac, and Jacob, with whom God first entered into covenant; and consequently they were children of the covenant, and also children of the prophets; that is, the people to whom God primarily and chiefly sent the prophets. So great were the prerogatives of the Jews, that they are called the children of the prophets, children of the prophets, children of the promise, children of the covenant, children of the kingdom. But the higher a people are exalted by spiritual privileges, the lower they fall if they miscarry.