John 16:31

“Jesus answered them, do ye now believe?] Not as calling their faith in question; or as denying they had any; or as despising it for the smallness of it; but as reproving them for their security, vain confidence and boasting, as if their faith was so very strong that it would never be moved; and perhaps for the lateness of it too: the words may be read affirmatively, without an interrogation, “ye do believe now”; they are in the Syriac and Arabic versions read imperatively, “believe ye now”. Though the “now” is left out by the former, which is not to be spared, for the emphasis lies on it; and a regard seems to be had both to time past and to come. The words carry in them a tacit reproof,…”

“Jesus answered . . . Do ye now believe?--that is, "It is well ye do, for it is soon to be tested, and in a way ye little expect." the hour cometh, yea, is now come, that ye shall be scattered, every man to his own, and shall leave me alone; and yet I am not alone--A deep and awful sense of wrong experienced is certainly expressed here, but how lovingly! That He was not to be utterly deserted, that there was One who would not forsake Him, was to Him matter of ineffable support and consolation; but that He should be without all human countenance and cheer, who as Man was exquisitely sensitive to the law of sympathy, would fill themselves with as much shame, when they afterwards recurred to it,…”

“Do ye now believe? - Do you truly and really believe? This question was evidently asked to put them on a full examination of their hearts. Though they supposed that they had unshaken faith - faith that would endure every trial, yet he told them that they were about to go through scenes that would test them, and where they would need all their confidence in God. When we feel strong in the faith we should examine ourselves. It may be that we are deceived; and it may be that God may even then be preparing trials for us that will shake our faith to its foundation. The Syriac and Arabic read this in the indicative as an affirmation - “Ye do now believe.” The sense is not affected by this reading.…”

“Do: Joh 13:38; Luk 9:44, Luk 9:45 John 16:32”