St-Gregory-the-DialogistWhile two of His disciples walked together in the way, not believing in His Resurrection, but talking together concerning Him, the Lord manifested Himself unto them, but yet held their eyes that they should not know Him.

This holding of the eyes of their body, wrought by the Lord, was a figure of the spiritual veil which was yet upon the eyes of their heart.

For in their heart they loved and yet doubted: even as the Lord drew near to them outwardly, but showed not Who He was.

To them that talked together of Him, He revealed His immediate presence; but hid, from them that doubted, the knowledge of His Person.

He spoke to them; He rebuked the hardness of their heart; He expounded unto them in all the Scriptures the things concerning Himself.

And, nevertheless, seeing that He was yet a stranger to faith in their hearts, He made as though He would have gone further.

[…] They were put to the proof whether, though they loved Him not yet as their God, they could love Him at least as a wayfarer.

But since it was impossible, that they with whom Truth walked should be loveless, they asked Him as a wayfarer to take of their hospitality.

[…] They laid a table therefore, and set before Him bread and meat; and that God Whom they had not known in the expounding of the Holy Scripture, they knew in the breaking of bread.

In hearing the commandments of God they were not enlightened, but they were enlightened in the doing of them.

As it is written: “It is not the hearers of the law who are just before God, but the doers of the law who shall be justified” (Rom. 2:13).

Whosoever therefore will understand that which he hears, let him make haste to practise in his works that which he hath already been able to hear.

Behold, the Lord was not known while He spoke, but He was contented to be known when He broke bread.

Gregory the Great (c.540-604): Homilies on the Gospels, 23 (from Mattins of Easter Monday in the Old Breviary.