Augustine of Hippo

For they walked not with their eyes shut, but there was something within them which did not permit them to know that which they saw, which a mist, darkness, or some kind of moisture, frequently occasions. Not that the Lord was not able to transform His flesh that it should be really a different form from that which they were accustomed to behold; since in truth also before His passion, He was transfigured in the mount, so that His face was bright as the sun. But it was not so now. …

Catena Aurea by Aquinas ↗

Gregory the Dialogist

They lay out a table, they bring food. And God whom they had not known in the expounding of Scriptures, they knew in the breaking of bread; for it follows, And it came to pass, as he sat at meat with them, he took bread, and blessed it, and brake, and gave it to them.

Catena Aurea by Aquinas ↗

Bede

And it came to pass, as He sat at meat with them, He took bread, and blessed it, and brake, and gave it to them. And their eyes were opened, and they recognized Him. Whom they did not recognize in the explanation of Holy Scripture, they recognize in the breaking of the bread. They were not enlightened by hearing the commandments of God, but by doing they were enlightened. Because it is written: Not the hearers of the law are just before God, but the doers of the law shall be justified (Rom. II). …

On the Gospel of Luke ↗