Note 84 — Chapter IX · MIRACLES OF JESUS.

When the father has informed Jesus of the subject of dispute and of the inability of the disciples to relieve the boy, Jesus breaks forth into the exclamation, O faithless and perverse generation, etc. On a comparison of the close of the narrative in Matthew, where Jesus, when his disciples ask him why they could not cast out the demon, answers; Because of your unbelief, and proceeds to extol the power of faith, even though no larger than a grain of mustard seed, as sufficient to remove mountains (v. 19 ff.): it cannot be doubted that in this expression of dissatisfaction Jesus apostrophizes his disciples, in whose inability to cast out the demon, he finds a proof of their still deficient faith.84 This concluding explanation of the want of power in the disciples, by their unbelief, Luke omits: and Mark not only imitates him in this, but also interweaves (v. 21–24), a by-scene between Jesus and the father, in which he first gives an amplified description of the symptoms of the child’s malady, drawn partly from Matthew, partly from his own resources, and then represents the father, on being required to believe, as confessing with tears the weakness of his faith, and his desire that it may be strengthened. Taking this together with the mention of the disputative scribes, we cannot err in supposing the speech of Jesus, O faithless generation, etc., in Mark and also in Luke to refer to the people, as distinguished from the disciples; in Mark, more particularly to the father, whose unbelief is intimated to be an impediment to the cure, as in another case (Matt. ix. 2), the faith of relatives appears to further the desired object. As however both the Evangelists give this aspect to the circumstances, because they do not here give the explanation of the inefficiency of the disciples by their unbelief, together with the declaration concerning the power of faith to remove mountains: we must inquire whether the connexion in which they place these discourses is more suitable than this in which they are inserted by Matthew. In Luke the declaration: If ye have faith as a grain of mustard seed, etc. (neither he nor Mark has, Because of your unbelief), occurs xvii. 5, 6, with only the slight variation, that instead of the mountain a tree is named; but it is here destitute of any connexion either with the foregoing or the following context, and has the appearance of a short stray fragment, with an introduction, no doubt fictitious (of the same kind as Luke xi. 1, xiii. 23), in the form of an entreaty from the disciples: Lord, increase our faith. Mark gives the sentence on the faith which removes mountains as the moral of the history of the cursed fig tree, where Matthew also has it a second time. But to this history the declaration is totally unsuitable, as we shall presently see; and if we are unwilling to content ourselves with ignorance of the occasion on which it was uttered, we must accept its connexion in Matthew as the original one, for it is perfectly appropriate to a failure of the disciples in an attempted cure. Mark has sought to make the scene more effective by other additions, beside this episode with the father; he tells us that the people ran together that they might observe what was passing, that after the expulsion of the demon the boy was as one dead, insomuch that many said, he is dead; but that Jesus, taking him by the hand, as he does elsewhere with the dead (Matt. ix. 25), lifts him up and restores him to life.