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
George Leo Haydock
AD 1849
Some, by the day in this place, understand the time preceding the Passion of our Saviour; and, by the night, the time of his Passion. (Theophylactus)
By this he encouraged his disciples, assuring them that the day of his sojournment on earth was not yet over; and therefore that the Jews, with all their malice and hatred, could not hurt him. But when the night (the time of his Passion) comes, then their power over him commenced. This is your hour, says he to them, and the power of darkness. (Calmet)
The Hebrews then divided the day into twelve parts of equal duration, from the rising to the setting sun. (Bible de Vence)