Mark 10:51

(ubi sup.) Could He who was able to restore sight be ignorant of what the blind man wanted? His reason then for asking is that prayer may be made to Him; He puts the question, to stir up the blind man's heart to pray.

For the blind man looks down upon every gift except light, because, whatever a blind man may possess, without light he cannot see what he possesses.

But Jesus, considering his ready will, rewards him with the fulfilment of his desire. But the blindness in part, brought upon the Jews, will in the end be enlightened when He sends unto them the Prophet Elias. (Rom. 11:25) The people of the Jews also, because it kept the Scriptures and did not fulfil them, begs and starves by the wayside; but he cries out, Son of David, have mercy upon me, because the Jewish people is enlightened by the merits of the Prophets. Many rebuke him that he may hold his peace, that is, sins and devils restrain the cry of the poor; and he cried the more, because when the battle waxes great, hands are to be lifted up with crying to the Rock of help, that is, Jesus of Nazareth. Again, the Jewish people comes leaping, stripped of the old man, as a hart leaping on the mountains, that is, laying aside sloth, it meditates on Patriarchs, Prophets, and Apostles on high, and raises itself to heights of holiness. How consistent also is the order of salvation. First we heard by the Prophets, then we cry aloud by faith, next we are called by Apostles, we rise up by penitence, we are stripped of our old garment by baptism, and of our choice we are questioned. Again, the blind man when asked requires, that he may see the will of the Lord. Or, this is the way of which He said, I am the Way, the Truth, and the Life. This is the narrow way, which leads to the heights of Jerusalem, and Bethany, to the mount of Olives, which is the mount of light and consolation.