Theophylact of Ohrid — as excerpted in the Catena Aurea on Luke 24:13-24

“For having now obtained a spiritual body, distance of place is no obstacle to His being present to whom He wished, nor did He any further govern His body by natural laws, but spiritually and supernaturally. Hence as Mark says, He appeared to them in a different form, in which they were not permitted to know Him; for it follows, And their eyes were holden that they should not know him; in order truly that they may reveal their entirely doubtful conceptions, and uncovering their wound may receive a cure; and that they might know that although the same body which suffered, rose again, yet it was no longer such as to be visible to all, but only to those by whom He willed it to be seen; and that they should not wonder why henceforth He walks not among the people, seeing that His conversation was not fit for mankind, but rather divine; which is also the character of the resurrection to come, in which we shall walk as the Angels and the sons of God.”