29. His disciples say to him. This shows how great was the efficacy of, that consolation, for it suddenly brought into a state of great cheerfulness those minds which formerly were broken and cast down. And yet it is certain that the disciples did not yet understand fully the meaning of Christ’s discourse; but though they were not yet capable of this, the mere odor of it refreshed them. When they exclaim that their Master speaketh openly, and without a figure, their language is certainly extravagant, and yet they state honestly what they feel. The same thing falls within our own experience in the present day; for he who has only tasted a little of the doctrine of the Gospel is more inflamed, and feels much greater energy in that small measure of faith, than if he had been acquainted with all the writings of Plato. Not only so, but the roads which the Spirit of God produces in the hearts of the godly are sufficient proofs that God worketh in a secret manner beyond their capacity; for otherwise Paul would not call them groans that cannot be uttered, (Romans 8:26.)

Thus we ought to understand that the apostles were conscious of having made some progress, so that they could say with truth, that they did not now find the words of Christ to be altogether obscure; but that they were deceived in this respect, that they thought they understood more than they did. Now the source of their mistake was, that they did not know what the gift of the Holy Spirit would be. They therefore give themselves up to joy before the time, just as if a person should think himself rich with a single gold piece. They conclude, from certain signs, that Christ came out from God, and they glory in it, as if nothing more were needed. Yet still they were far from that knowledge, so long as they did not understand what Christ would be to them in future.

31. Do you now believe? As the disciples were too highly pleased with themselves, Christ reminds them that, remembering their weakness, they ought rather to confine themselves within their own little capacity. Now, we never are fully aware of what we want, and of our great distance from the fullness of faith, till we come to some serious trial; for then the fact shows how weak our faith was, which we imagined to be full. Christ recalls the attention of the disciples to this matter, and declares that they will ere long forsake him; for persecution is a touchstone to try faith, and when its smallness becomes evident, they who formerly were swelled with pride begin to tremble and to draw back.

The question put by Christ is therefore ironical; as if he had said, “Do you boast as if you were full of faith? But the trial is at hand, which will disclose your emptiness.” In this manner we ought to restrain our foolish confidence, when it indulges itself too freely. But it might be thought, either that the disciples had no faith at all, or that it was extinguished, when they had forsaken Christ, and were scattered in all directions. I reply, though their faith was weakened, and had almost given way, still something was left, from which fresh branches might afterwards shoot forth.

32. Yet I am not alone. This correction is added, in order to inform us that, when Christ is forsaken by men, he loses nothing of his dignity. For since his truth and his glory are founded on himself, and. do not depend on what the world believes, if it happen that he is forsaken by the whole world, still he is in no degree impaired, because he is God, and needs not any assistance from another.

Because my Father is with me. When he says that the Father will be with me, the meaning is, that God will be on his side, so that he will have no need to borrow anything from men. Whoever shall meditate on this in a proper manner will remain firm, though the whole world should be shaken, and the revolt of all men will not overturn his faith; for we do not render to God the honor which is due to him, if we are not satisfied with having God alone.

33. These things I have spoken to you. He again repeats how necessary those consolations are which he had addressed to them; and he proves it by this argument, that numerous distresses and tribulations await them in the world. We ought to attend, first, to this admonition, that all believers ought to be convinced that their life is exposed to many afflictions, that they may be disposed to exercise patience. Since, therefore, the world is like a troubled sea, true peace will be found nowhere but in Christ. Next, we ought to attend to the manner of enjoying that peace, which he describes in this passage. He says that they will have peace, if they make progress in this doctrine. Do we wish then to have our minds calm and easy in the midst of afflictions? Let us be attentive to this discourse of Christ, which in itself will give us peace

But be of good courage. As our sluggishness must be corrected by various afflictions, and as we must be awakened to seek a remedy for our distress, so the Lord does not intend that our minds shall be cast down, but rather that we shall fight keenly, which is impossible, if we are not certain of success; for if we must fight, while we are uncertain as to the result, all our zeal will quickly vanish. When, therefore, Christ calls us to the contest, he arms us with assured confidence of victory, though still we must toil hard.

I have overcome the world. As there is always in us much reason for trembling, he shows that we ought to be confident for this reason, that he has obtained a victory over the world, not for himself individually, but for our sake. Thus, though in ourselves almost overwhelmed, if we contemplate that magnificent glory to which our Head has been exalted, we may boldly despise all the evils which hang over us. If, therefore, we desire to be Christians, we must not seek exemption from the cross, but must be satisfied with this single consideration, that, fighting under the banner of Christ, we are beyond all danger, even in the midst of the combat. Under the term World, Christ here includes all that is opposed to the salvation of believers, and especially all the corruptions which Satan abuses for the purpose of laying snares for us.