Matthew 17:18

Peter, anxious for such desirable life, and preferring his own benefit to that of many, had said, "It is good for us to be here." But since charity seeks not her own, Jesus did not this which seemed good to Peter, but descended to the multitude, as it were from the high mount of His divinity, that He might be of use to such as could not ascend because of the weakness of their souls; whence it is said, "And when he was come to the multitude;" for if He had not gone to the multitude with His elect disciples, there would not have come near to Him the man of whom it is added, "There came to him a man kneeling down, and saying, Lord, have mercy on my son." Consider here, that sometimes those that are themselves the sufferers believe and entreat for their own healing, sometimes others for them, as he who kneels before Him praying for his son, and sometimes the Saviour heals of Himself unasked by any. First, let us see what this means that follows, "For he is lunatic, and sore vexed." Let the physicians talk as they list; for they think it no unclean spirit, but some bodily disorder, and say, that the humours in the head are governed in their motions by sympathy with the phases of the moon, whose light is of the nature of humours. But we who believe the Gospel say that it is an unclean spirit that works such disorders in men. The spirit observes the moon's changes, that it may cheat men into the belief that the moon is the cause of their sufferings, and so prove God's creation to be evil; as other daemons lay wait for men following the times and courses of the stars, that they may speak wickedness in high places, calling some stars malignant, others benign; whereas no star was made by God that it should produce evil. In this that is added, "For ofttimes he falls into the fire, and oft into the water,"

is to be noted, that were not man fortified here by Providence, he would long since have perished; for the daemon who cast him into the fire, and into the water, would have killed him outright, had God not restrained him.

In saying, "And I brought him to thy disciples, and they could not heal him," he covertly accuses the Apostles, whereas that a cure is impossible is sometimes the effect not of want of power in those that undertake it, but of want of faith in those that are to be healed.

See herein also his folly, in that before the multitude he appeals to Jesus against His disciples. But He clears them from shame, imputing their failure to the patient himself; for many things shew that he was weak in faith. But He addresses His reproof not to the man singly, that He may not trouble him, but to the Jews in general. For many of those present, it is likely, had improper thoughts concerning the disciples, and therefore it follows, "Jesus answered and said, O faithless and perverse generation, how long shall I be with you, how long shall I suffer you?" His "How long shall I be with you?" shews that death was desired by Him, and that He longed for His withdrawal.

It may be known also, that not now for the first time, but of a long time, the Lord had borne the Jews" stubbornness, whence He says, "How long shall I suffer you?" because I have now a long while endured your iniquities, and ye are unworthy of My presence.

Or; Because the disciples could not heal him as being weak in faith, He said to them, "O faithless generation," adding "perverse," to shew that their perverseness had introduced evil beyond their nature. But I suppose, that because of the perverseness of the whole human race, as it were oppressed with their evil nature, He said, "How long shall I be with you?"

Not that we must think that He was overcome by weariness of them, and that The meek and gentle broke out into words of wrath, but as a physician who might see the sick man acting against his injunctions, would say, How long shall I frequent your chamber? How long throw away the exercise of my skill, while I prescribe one thing, and you do another? That it is the sin, and not the man with whom He is angry, and that in the person of this one man He convicts the Jews of unbelief, is clear from what He adds, "Bring him to me."

When He had vindicated His disciples, He leads the boy's father to a cheering hope of believing that he shall be delivered out of this evil; and that the father might be led to believe the miracle that was coming, seeing the daemon was disturbed even when the child was only called;

He rebuked him, that is, not the sufferer, but the daemon.

In which deed He left an example to preachers to attack sins, but to assist men.

Or, His reproof was to the child, because for his sins he had been seized on by the daemon.

The lunatic is figuratively one who is hurried into fresh vices every hour, one while is cast into the fire, with which the hearts of the adulterers burn [margin note: Hos 7:4,6]; or again into the waters of pleasures or lusts, which yet have not strength to quench love.

Or the fire pertains to anger, which aims upwards, water to the lusts of the flesh.

12] We may see sometimes that an impulse towards good works comes over such, when, lo! again as by a sudden seizure of a spirit they are laid hold of by their passions, and fall from that good state in which they were supposed to stand. Perhaps his father stands for the Angel to whom was allotted the care of this lunatic, praying the Physician of souls, that He would set free his son, who could not be delivered from his suffering by the simple word of Christ's disciples, because as a deaf person he cannot receive their instruction, and therefore he needs Christ's word, that henceforth he may not act without reason.

Following this you may see, “ He did not there many mighty works because of their unbelief. ” We are taught by these things that powers were found in those who believed, since “to every one that hath shall be given and he shall have abundance,” but among unbelievers not only did the powers not work, but as Mark wrote, “They could not work.” For attend to the words, “He could not there do any mighty works,” for it is not said, “He would not,” but “He could not; ”as if there came to the power when working co-operation from the faith of him on whom the power was working, but this co-operation was hindered in its exercise by unbelief. …

116. Matthew goes on in the following terms: “And when He was come to the multitude, there came to Him a certain man, kneeling down before Him, and saying, Lord, have mercy on my son; for he is lunatic, and sore vexed;” and so on, down to the words, “Howbeit this kind is not cast out but by prayer and fasting.” Both Mark and Luke record this incident, and that, too, in the same order, without any suspicion of a want of harmony.

On the words of the Gospel, Matt. xvii. 19 , “Why could not we cast it out”? etc., and on prayer.

1. Our Lord Jesus Christ reproved unbelief even in His own disciples, as we heard just now when the Gospel was being read. For when they had said, “Why could not we cast him out?” He answered, “Because of your unbelief.” If the Apostles were unbelievers, who is a believer? What must the lambs do, if the rams totter? Yet the mercy of the Lord did not disdain them in their unbelief; but reproved, nourished, perfected, crowned them. For they themselves, as mindful of their own weakness, said to Him, as we read in a certain place in the Gospel, “Lord, increase our faith. Lord,” say they, “increase our faith.” The knowing that they had a deficiency, was the first advantage; a greater happiness still, to know who it was of whom they were asking. …

3. Wherefore, see how the Lord in this passage exhorted His disciples to prayer, when He said, “Ye could not cast out this devil because of your unbelief.” For then exhorting them to prayer He ended thus; “this kind is not cast out but by prayer and fasting.” If a man must pray, to cast out devils from another, how much more to cast out his own covetousness? how much more to cast out his own drunkenness? how much more to cast out his own luxuriousness? how much more to cast out his own uncleanness? How many things in a man are there, which if they are persevered in, allow of no admission into the kingdom of heaven! Consider, Brethren, how a physician is entreated for the preservation of temporal health, how, if any one is desperately ill, is he ashamed or slow to throw himself at a man’s feet? to bathe in tears the footsteps of any very able chief physician? And what if the physician say …

17. Also our Saviour used thus to say to every one who drew near to Him to be healed: According to thy faith be unto thee . And when the blind man approached Him, He said to him: Dost thou believe that I am able to heal thee? That blind man said to Him: Yea, Lord, I believe . And his faith opened his eyes. And to him whose son was sick, He said: Believe and thy son shall live. He said to Him: I believe, Lord; help thou my feeble faith . And by his faith his son was healed. And also when the nobleman came near to Him, by his faith was his boy healed, when he said to our Lord: Speak the word and my servant will be cured . And our Lord was astonished at his faith, and according to his faith it happened to him. And also when the chief of the Synagogue requested Him concerning his daughter, He said thus to him: Only firmly believe and thy daughter shall live . …

1. I have heard a reproach, which has greatly vexed me. The unclean (the heathen) say, that this people, which is gathered together out of all nations, has no God. And thus say the impious: “If they have a God, why does He not avenge His people?” And darkness more exceedingly has thickened upon me, because the Jews also reproach us, and magnify themselves over the children of our people. It happened one day, that a man, who is called wise amongst the Jews, questioned me, saying: Jesus, Who is called your Teacher, wrote for you, that If there shall be in you faith like one grain of mustard, ye shall say to this mountain, Remove, and it shall remove from before you; and (ye shall say) even, Be lifted up and fall into the sea, and it shall obey you . …