Bede the Venerable — as excerpted in the Catena Aurea on Luke 24:13-24

“Or he says this, because they thought Him a stranger, whose countenance they did not recognise. But in reality He was a stranger to them, from the infirmity of whose natures, now that He had obtained the glory of the resurrection, He was far removed, and to whose faith, as yet ignorant of His resurrection, He remained foreign. But again the Lord asks; for it follows, And he said unto them, What things? And their answer is given, Concerning Jesus of Nazareth, who was a Prophet. They confess Him to be a Prophet, but say nothing of the Son of God; either not yet perfectly believing, or fearful of falling into the hands of the persecuting Jews; either knowing not who He was, or concealing the truth which they believed. They add in praise of Him, mighty in deed and word.”