(9) Are there not twelve hours in the day?--Or more exactly, Are not the hours of the day twelve? They had expressed their fears that danger and death would be the result of going into Judaea. His answer would say that the darkness of the night which they dreaded could not come yet. The natural night would come not until its appointed hour, until the twelve hours of the day had run their course. The day of His life is marked out by limits no less sure. The night indeed cometh, but it is as yet full day, and in that day He and they must do the work which is appointed of the Father. (Comp. John 11:6; and Notes on John 2:4; John 7:30; John 8:20; John 9:4; John 12:27; John 17:1.)

Incidentally these words bear on the question of St. John's method of counting the hours of the day, and support the view which from other passages seems quite evident that he follows the ordinary Babylonian numeration. (Comp. Notes on John 1:40; John 4:6; John 4:52; John 19:14.)

Because he seeth the light of this world--i.e., the natural light of the sun. While the earth is illumined by it, men follow the course of their work without danger of stumbling. In the application to their own position, the truth holds good. The day of His work is illumined by the light of heaven, and for Him and them there is safety.

Verse 9. - Jesus answered, Are there not twelve hours in the day? If a man walk in the day, he stumbleth not, because he seeth the light of this world. The answer of Jesus is a further deliverance concerning the human law and season (καιρός) of work - a parable drawn from earthly and human analogies, which will unquestionably have a direct bearing on the conditions of Divine service at all time, and is therefore applicable to the disciples with himself. It receives also special significance from some aspects of Christ's own ministry, and from the step he had just now declared that he intended to take. Of course, the parable is based upon the conditions of human work; one of these conditions is light, another of them is time. Light is necessary for all the wise efforts of men - the light of day, the light of this world or the sun; we must see whither we are going, in order to avoid the occasions of stumbling. We must submit to this comprehensive condition, or we fail (cf. here John 9:4, "I must work the works of him that sent me while it is day; the night cometh, when no man can work"). There are two kinds of night of which he speaks. One is the night which arrests all labor, the night of death; and the other is the night of ignorance and unbelief, when the light that is in a man becomes darkness, when, if a man does attempt to work or walk, he will stumble. Meyer and some others, from the reference to another condition, viz. that of time, persist in limiting the notion of the day to that of the period of service, about which the Lord says also some very solemn things; and Meyer objects to Luthardt and others, who give to the sun, to the light of this world, any moral or spiritual meaning. We need not limit the application. Light may mean knowledge of duty supplied by God's providence and the revelation of his will, and so far as "day" is made by light, it is important to notice it here. But time is an equally important condition, and whereas in John 9:4, 5 the Lord laid emphasis upon the limited amount of opportunity during which the light lasts and the work can be done; so here there is an appointed period during which stumbling is unnecessary: "twelve hours in the day." This (I take to be Christ's meaning) is one of these hours, and before the night comes "I must work." Godet suggests that the disciples, by this question, recommended him not to shorten his career by courting danger, and so to create for himself "a thirteenth hour" to the day, in which he would secure no blessing; that the Lord condemned the proposal, knowing that he was immortal till his hour had come; and that if we shrink from a call of duty, and thus save ourselves, adding an unhallowed increment to our day of useless work, we incur the like condemnation, we shall stumble. Let it be observed that the reason for working in the night is not because we have twelve hours for duty and no more, but because, though we have a time of service and an opportunity, we have let both slip past us, and then the work is difficult and perilous if we do attempt it. Some have said that Judas, Peter, Thomas, etc., walked in the night, and that they stumbled and fell.

11:7-10 Christ never brings his people into any danger but he goes with them in it. We are apt to think ourselves zealous for the Lord, when really we are only zealous for our wealth, credit, ease, and safety; we have therefore need to try our principles. But our day shall be lengthened out, till our work is done, and our testimony finished. A man has comfort and satisfaction while in the way of his duty, as set forth by the word of God, and determined by the providence of God. Christ, wherever he went, walked in the day; and so shall we, if we follow his steps. If a man walks in the way of his heart, and according to the course of this world, if he consults his own carnal reasonings more than the will and glory of God, he falls into temptations and snares. He stumbles, because there is no light in him; for light in us is to our moral actions, that which light about us to our natural actions.Jesus answered, are there not twelve hours in the day?.... So the Jews reckoned, and so they commonly say (a), , "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 it; See Gill on John 8:12. So our Lord intimates, that as yet it was day with him, his time of life was not expired; and so, as yet, it was a time of walking and working; nor did he fear any danger he was exposed to, or any snares that were laid for him, since he could not be hurt by any, nor his life taken from him before his time.

(a) T. Bab Sanhedrin, fol. 88. 2. Avoda Zara, fol. 3. 2. Vid. Philo. de Somniis, p. 1143.