Fear not, only believe. The message about her death had induced despair: for he had asked nothing from Christ but relief to the diseased young woman. Christ therefore bids him take care lest, by fear or distrust, he shut out that grace, to which death will be no hindrance. By this expression, only believe, he means that he will not want power, provided Jairus will allow him; and, at the same time, exhorts him to enlarge his heart with confidence, because there is no room to fear that his faith will be more extensive than the boundless power of God. And truly this is the case with us all: for God would be much more liberal in his communications to us, if we were not so close; but our own scanty desires hinder him from pouring out his gifts upon us in greater abundance. [1] In general, we are taught by this passage, that we cannot go beyond bounds in believing: because our faith, however large, will never embrace the hundredth part of the divine goodness.

Footnotes

1 - "Mais la petitesse, et (par maniere de dire) la chicete de nostre foy, l'empesche de faire decouler plus abondamment ses biens sur nous;" -- "But the smallness and (so to speak) the niggardliness of our faith, hinders him from making his benefits flow more abundantly on us."

Jesus - saith - These words were spoken by our Lord to the afflicted father, immediately on his hearing of the death of his child, to prevent that distress which he otherwise must have felt on finding that the case was now, humanly speaking, hopeless.

(3) As soon as Jesus heard the word that was spoken, he saith unto the ruler of the synagogue, Be not afraid, only believe.
(3) By faith fathers apprehended the promises of life even for their children.

As soon as Jesus had heard the word that was spoken,.... By those that came from the ruler's house; as that his daughter was dead, and it was to no purpose to give him any further trouble, since all hope of recovery was now gone:
he saith unto the ruler of the synagogue; who was overwhelmed with trouble, and quite dispirited, and ready to swoon and die away;
be not afraid, only believe: do not be discouraged at these tidings, or distrust my power to help thee, only believe that I am able to raise her, even from the dead; and fear not, but it will be done. If a man can but believe, he has no reason to fear; for what is it that almighty power cannot do? it can raise the dead; there is nothing can stand in its way, or stop its course; and faith in it surmounts difficulties which are insuperable to carnal sense and reason: this was the support and foundation of Abraham's faith; hence he was strong in the exercise of it, and believed in hope against hope, because he was fully persuaded that God was able to perform what he had promised, Romans 4:18. And whereas the ruler had expressed some faith in Christ, that his daughter, though at the point of death, would be, healed by him and live, provided he would but come and lay his hands on her; and Christ had assented to go along with him, and had given him an intimation that he would restore her; he had nothing to do but to believe in him, that even though she was dead, he was able to raise her from the dead, as well as to recover her at the point of death, and that he would do it, but, oh! this thing, "only believe", how hard a matter is it, though there is so much encouragement to it both in the power and will of Christ! Faith is not of a man's self at first; it is the gift of God, and the operation of his Spirit; and the lively and comfortable exercise of it is owing to the influence of efficacious grace: but if Christ, who is the author and finisher of faith, says "believe", or "only believe"; such power goes along with his words, as doubtless did at this time, as causes souls to exercise faith in him; and the more faith, the less fear; and such walk most comfortably in themselves, and most to the glory of Christ, who walk by faith on him. This word "only" does not exclude the exercise of other graces, but rather implies it, for where this grace is in exercise, generally speaking, others are; nor the performance of good works, which are the fruits and effects of true faith, and without which faith is dead; but it stands opposed to fears and doubting, and to all carnal reasonings, as well as to all trust and confidence in other objects besides Christ.

he saith unto the ruler of the synagogue, Be not afraid, only believe--Jesus, knowing how the heart of the agonized father would sink at the tidings, and the reflections at the delay which would be apt to rise in his mind, hastens to reassure him, and in His accustomed style: "Be not afraid, only believe"--words of unchanging preciousness and power! How vividly do such incidents bring out Christ's knowledge of the human heart and tender sympathy! (Hebrews 4:15).