While he was still going down. Here is described the effect of faith, together with the efficacy of the word; for as Christ, by a word, restores to life this child who was just dying, so in one moment the father, by his faith, regains his son safe and sound. Let us therefore know that, whenever the Lord offers his benefits to us, his power will always be ready to accomplish whatever he promises, provided that the door be not shut against him by our unbelief. It does not always happen, I acknowledge, and even is not frequent or ordinary, that God instantly displays his arm for giving us assistance; but whenever he delays, he has always a good reason, and one that is highly advantageous to us. This at least is certain, that so far is he from delaying unnecessarily, that he rather contends with the obstacles which we throw in the way; and, therefore, when we do not see his immediate aid, let us consider how much of concealed distrust there is in us, or at least how small and limited our faith is. And we ought not to wonder if He is unwilling to allow his benefits to be lost, or to throw them at random on the ground, but chooses to bestow them on those who, by opening the bosom of their faith, are ready to receive them. And though he does not always assist his people in the same manner, yet in no instance will the faith of any one be fruitless, or hinder us from experiencing the truth of what the Prophet says, that the promises of God, even when they seem to delay, are in reality making great haste. Though it tarry, wait for it; because it will surely come, it will not tarry, (Habakkuk 2:3.)

And as he was now going down,.... From Cana to Capernaum, the day after he had been with Christ:
his servants met him, and told him, saying, thy son liveth; as soon as this cure was wrought, though it was not known in the family how, and by whom it was done, immediately some of the servants were dispatched to carry the news to their master, that his sorrow might be removed; and he give himself no further trouble in seeking for a cure: these meeting him on the road, with an air of pleasure, at once address him with the joyful news, that his son was thoroughly recovered of his disorder, and was alive, and well; news which he was acquainted with, and believed before; though it must give him an additional, pleasure to have it confirmed.