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, that they believed no sooner, or were not before this time more established in their faith, when he had been so long with them, and they had heard so many discourses from him, and had seen so many miracles wrought by him: however, it was not too late, and they would do well to go on believing; but it is suggested to them they would meet with something that would try their faith: and it is as if Christ had said, ye believe in me now, while I am with you, and all things go according to your mind; but what will you do anon, when I shall be taken from you, be apprehended by mine enemies, be delivered into the hands of the Gentiles, be crucified, die, and be laid in the grave? will ye believe then? one of you will betray me, another deny me, and all will forsake me, and some express their doubts about me.