Matthew 17:18

Of the changefulness of the sinner it is said, The fool changes as the moon. (Ecclus. 27:12.) 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.

He rebuked him, that is, not the sufferer, but the dæmons. Or, His reproof was to the child, because for his sins he had been seized on by the dæmons.

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

"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."