Jesus answered,
Are there not twelve hours in the day? If any man walks in the day, he stumbles not, because he sees the light of this world.
All Commentaries on John 11:9 Go To John 11
Cyril of Alexandria
AD 444
Perhaps He compares to the ever-moving course of the day, the easily-swayed and novelty-loving mind of men, which is not established in one opinion, but vacillates from one way of thinking to another, just as the day changes from one hour to another. And thus also thou wilt understand the words: Are there not twelve hours in the day? That is, "I," says He, "am the Day and the Light. Therefore, just as it is not possible for the light of the day to fail, without having completed its appointed time; so it is not among possibilities that the illumination which proceeds from Me should be shrouded from the Jews, without having fully reached its fitting measure of philanthropy." And He speaks of the time of His presence as "day," and of that before it as "night;" as also when the Lord says: We must work the works of Him that sent us, while it is day. This therefore is what He here says: "It is not now a time for Me to separate Myself from the Jews, even though they be unholy, but I must do all things that pertain to their healing. For they must not now be punished, by having the Divine grace (like the light of the sun) withdrawn from them. But just as the light of the day does not fail until the twelve hours have been completed, so the illumination that proceeds from Me is not shrouded before the proper time; but until I am crucified I remain among the Jews, sending forth unto them like light the understanding of the knowledge of God. For since the Jews are in the darkness of unbelief, and so stumble at Me as at a stone, I must go back to them and enlighten them, that they may desist from their madness in fighting against God."
