World Wide Study Bible
a Bible passage
32. Did not our heart burn within us? Their recognition of Christ led the disciples to a lively perception of the secret and hidden grace of the Spirit, which he had formerly bestowed upon them. For God sometimes works in his people in such a manner, that for a time they are not aware of the power of the Spirit, (of which, however, they are not destitute,) or, at least, that they do not perceive it distinctly, but only feel it by a secret movement. Thus the disciples had formerly indeed felt an ardor, which they now remember, but which they had not then observed: now that Christ has made himself known to them, they at length begin to consider the grace which they had formerly, as it were, swallowed without tasting it, and perceive that they were stupid. For they accuse themselves of indifference, as if they had said, “How did it happen that we did not recognize him while he was talking? for when he penetrated into our hearts, we ought to have perceived who he was.” But they conclude that he is Christ, not simply from the bare sign that his word was efficacious to inflame their hearts, but because they ascribe to him the honor which belongs to him, that when he speaks with the mouth, he likewise inflames their hearts inwardly by the warmth of his Spirit. Paul, indeed, boasts that the ministration of the Spirit was given to him, (2 Corinthians 3:8;) and Scripture frequently adorns the ministers of the word with such titles as the following; that they convert the hearts, enlighten the understandings, and renew men so as to become pure and holy sacrifices; but then it is not to show what they do by their own power, but rather what the Lord accomplishes by means of them. But both belong equally to Christ alone, to pronounce the outward voice, and to form the hearts efficaciously to the obedience of faith.
It cannot be doubted that he then engraved an uncommon Mark on the hearts of these two men, that they might at length perceive that in speaking he had breathed into them a divine warmth. For though the word of the Lord is always fire, yet a fiery rigor was at that time manifested in a peculiar and unusual, manner in the discourse of Christ, and was intended to be an evident proof of his divine power; for it is he alone who baptizeth in the Holy Ghost and in fire, (Luke 3:16.) Yet let us remember that it is the proper fruit of heavenly doctrine, whoever may be the minister of it, to kindle the fire of the Spirit in the hearts of men, to purify and cleanse the affections of the flesh, or rather to burn them up, and to kindle a truly fervent love of God; and by its flame, as it were, to carry away men entirely to heaven.