Matthew 17:14

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 dæmons 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...

"And when they were come to the multitude, there came to Him a man, kneeling down to Him, and saying, Lord, have mercy on my son, for he is lunatic, and sore vexed; for ofttimes he falleth into the fire, and oft into the water. And I brought him unto Thy disciples, and they could not cure him." This man the Scripture signifies to be exceedingly weak in faith; and this is many ways evident; from Christ's saying, "All things are possible to him that believeth;" from the saying of the man himself that approached, "Help Thou mine unbelief:" from Christ's commanding the devil to "enter no more into him;" and from the man's saying again to Christ, "If Thou canst." "Yet if his unbelief was the cause," it may be said, "that the devil went not out, why doth He blame the disciples?" Signifying, that even without persons to bring the sick in faith, they might in many instances work a cure. For as the faith of the person presenting oftentimes availed for receiving the cure, even from inferior ministers; so the power of the doers oftentimes sufficed, even without belief in those who came to work the miracle. And both these things are signified in the Scripture. For both they of the company of Cornelius by their faith drew unto themselves the grace of the Spirit; and in the case of Eliseus again, when none had believed, a dead man rose again. For as to those that cast him down, not for faith but for cowardice did they cast him, unintentionally and by chance, for fear of the band of robbers, and so they fled: while the person himself that was cast in was dead, yet by the mere virtue of the holy body the dead man arose. Whence it is clear in this case, that even the disciples were weak; but not all; for the pillars were not present there. And see this man's want of consideration, from another circumstance again, how before the multitude he pleads to Jesus against His disciples, saying, "I brought him to Thy disciples, and they could not cure him." But He, acquitting them of the charges before the people, imputes the greater part to him. For, "O faithless and perverse generation," these are His words, "how long shall I be with you?" not aiming at his person only, lest He should confound the man, but also at all the Jews. For indeed many of those present might probably be offended, and have undue thoughts of them. But when He said, "How long shall I be with you," He indicates again death to be welcome to Him, and the thing an object of desire, and His departure longed for, and that not crucifixion, but being with them, is grievous. He stopped not however at the accusations; but what saith He? "Bring him hither to me." And Himself moreover asks him, "how long time he is thus;" both making a plea for His disciples, and leading the other to a good hope, and that he might believe in his attaining deliverance from the evil. And He suffers him to be torn, not for display (accordingly, when a crowd began to gather, He proceeded to rebuke him), but for the father's own sake, that when he should see the evil spirit disturbed at Christ's mere call, so at least, if in no other way, he might be led to believe the coming miracle. And because he had said, "Of a child," and, "If thou canst help me," Christ saith, "To him that believeth, all things are possible," again giving the complaint a turn against him. And whereas when the leper said, "If Thou wilt, Thou canst make me clean," bearing witness to His authority Christ commending him, and confirming His words, said, "I will, be thou clean;" in this man's case, upon his uttering a speech in no way worthy of His power,-"If Thou canst, help me,"-see how He corrects it, as not rightly spoken. For what saith He? "If thou canst believe, all things are possible to him that believeth." What He saith is like this: "Such abundance of power is with me, that I can even make others work these miracles. So that if thou believe as one ought, even thou thyself art able," saith He, "to heal both this one, and many others."