John 11:9

“Jesus answered, are there not twelve hours in the day? etc.] So the Jews reckoned, and so they commonly say f484, µwyh ywh tw[ç hrç[ µytç, “twelve hours are a day”, or a day consists of twelve hours, which they divided into four parts, each part consisting of three hours this was a matter well known, and Christ puts the question as such, it being what might be easily answered, and at once assented to: if any man walk in the day: within any of the twelve hours, even in the last of them, he stumbleth not, at any stone or stumbling block in the way, because he seeth the light of this world; the sun in the horizon not being as yet set, by the light of which he sees what is before him, and avoids…”

“Jesus answered, Are there not twelve hours in the day?--(See on Joh 9:4). Our Lord's day had now reached its eleventh hour, and having till now "walked in the day," He would not mistime the remaining and more critical part of His work, which would be as fatal, He says, as omitting it altogether; for "if a man (so He speaks, putting Himself under the same great law of duty as all other men--if a man) walk in the night, he stumbleth, because there is no light in him."”

“Twelve hours - The Jews divided the day from sunrise to sunset into twelve equal parts. A similar illustration our Saviour uses in John 9:4-5. See the notes at that place. If any man walk - If any man travels. The illustration here is taken from a traveler. The conversation was respecting a journey into Judea, and our Lord, as was his custom, took the illustration from the case before him. He stumbleth not - He is able, having light, to make his journey safely. He sees the obstacles or dangers and can avoid them. The light of this world - The light by which the world is illuminated that is, the light of the sun. In the night - In darkness he is unable to see danger or obstacles, and to avoid…”

“Are there not twelve hours in the day? - The Jews always divided the space from sunrise to sunset, were the days longer or shorter, into twelve parts: so that the hours of their day were all the year the same in number, though much shorter in winter than in summer. If any man walk in the day he stumbleth not - As if he had said, So there is such a space, a determined time, which God has allotted me. During that time I stumble not, amidst all the snares that are laid for me. Because he seeth the light of this world - And so I see the light of God surrounding me. John 11:10”

“Are: Joh 9:4; Luk 13:31-33 he stumbleth not: Joh 12:35; Pro 3:23; Jer 31:9 John 11:10”