Catena Aurea on Matthew 7:28–29: Augustine of Hippo

From that which is here said, He seems to have left the crowd of disciples - those out of whom He chose twelve, whom He called Apostles - but Matthew omits to mention it. For to His disciples only, Jesus seems to have held this Sermon, which Matthew recounts, Luke omits. That after descending into a plain He held another like discourse, which Luke records, and Matthew omits. Still it may be supposed, that, as was said above, He delivered on and the same Sermon to the Apostles, and the rest of the multitude present, which has been recorded by Matthew and Luke, in different words, but with the same truth of substance; and this explains what is here said of the multitude wondering.