With such a force at our command--a force that could shake the mountains and break the rocks--how come we ever to fail? So the disciples asked, and Christ's answer cuts to the very heart of the matter. Why could you not cast him out? For one reason only, because you had lost your hold of My strength, and therefore had lost your confidence in your own derived power, or had forgotten that it was derived, and essayed to wield it as if it were your own. You did not trust Me, so you did not believe that you could cast him out; or you believed that you could by your own might, therefore you failed. He throws them back decisively on themselves as solely responsible. Nowhere else, in heaven or in earth or hell, but only in us, does the reason lie for our breakdown, if we have broken down. Not in God, who is ever with us, ready to make all grace abound in us, whose will is that all men should be saved and come to the knowledge of the truth; not in the gospel which we preach, for it is the power of God unto salvation'; not in the demon might which has overcome us, for greater is He that is in us than he that is in the world.' We are driven from all other explanations to the bitterest and yet the most hopeful of all, that we only are to blame.
And what in us is to blame? Some of us will answer, our modes of working; they have not been free enough, or not orderly enough, or in some way or other not wisely adapted to our ends. Some will answer--Our forms of presenting the truth; they have not been flexible enough, or not fixed enough; they have been too much a reproduction of the old; they have been too licentious a departure from the old. Some will answer--Our ecclesiastical arrangements; they have been too democratic; they have been too priestly. Some will answer--Our intellectual culture; it has been too great, obscuring the simplicity that is in Christ; it has been too small, sending poorly furnished men into the field to fight with ordered systems of idolatry which rest upon a philosophical basis, and can only be overturned by undermining that. It is no part of my present duty to discuss these varying answers. No doubt there is room for improvement in all the fields which they indicate. But does not the spirit of our Lord's words here beckon us away from these purely secondary subjects to fix our self-examination on the depth and strength of our faith, as incomparably the most important element in the conditions which determine our success or our failure? I do not undervalue the worth of wise methods of action, but the history of the Church tells us that pretty nearly any methods of action are fruitful in the right hands, and that without living faith the best of them become like the heavy armour which half-smothered a feeble man. I do not pretend to that sublime indifference to dogma which is the modern form of supreme devotion to truth, but experience has taught us that wherever the name of Christ, as the Saviour of the world, has been lovingly proclaimed, there devils have been cast out, whatever private and sectional doctrines the exorciser has added to it. I do not disparage organisation, but courage is more than drill; and there is such a thing as the very perfection of arrangement without life, like cabinets in a museum, where all the specimens are duly classified, and dead. I believe, with the old preacher, that if God does not need our learning, He needs our ignorance still less, but it is of comparatively little importance whether the draught of living water be brought to thirsty lips in an earthen cup or a golden vase.
The main thing is, does it hold good measure?
And therefore, while leaving full scope for all improvements in these subordinate conditions, let me urge upon you that the main thing which makes us strong for our Christian work is the grasp of living faith, which holds fast the strength of God. There is no need to plunge into the jungle of metaphysical theology here. Is it not a fact that the might with which the power of God has wrought for men's salvation has corresponded with the strength of the Church's desire and the purity of its trust in His power? Is it not a truth plainly spoken in Scripture and confirmed by experience, that we have the awful prerogative of limiting the Holy One of Israel, and quenching the Spirit? Was there not a time in Christ's life on earth when He could do no mighty works because of their unbelief? We receive all spiritual gifts in proportion to our capacity, and the chief factor in settling the measure of our capacity is our faith. Here on the one hand is the boundless ocean of the divine strength, unfathomable in its depth, full after all draughts, tideless and calm, in all its movement never troubled, in all its repose never stagnating; and on the other side is the empty aridity of our poor weak natures. Faith opens these to the influx of that great sea, and according to our faith,' in the exact measure of our receptivity, does it enter our hearts. In itself the gift is boundless. It has no limit except the infinite fulness of the power which worketh in us. But in reference to our possession it is bounded by our capacity, and though that capacity enlarges by the very fact of being filled, and so every moment becomes greater through fruition, yet at each moment it is the measure of our possession, and our faith is the measure of our capacity. Our power is God's power in us, and our faith is the power with which we grasp God's power and make it ours. So then, in regard to God, our faith is the condition of our being strengthened with might by His Spirit.
Consider, too, how the same faith has a natural operation on ourselves which tends to fit us for casting out the evil spirits. Given a man full of faith, you will have a man tenacious in purpose, absorbed in one grand object, simple in his motives, in whom selfishness has been driven out by the power of a mightier love, and indolence stirred into unwearied energy. Such a man will be made wise to devise, gentle to attract, bold to rebuke, fertile in expedients, and ready to be anything that may help the aim of his life. Fear will be dead in him, for faith is the true anaesthesia of the soul; and the knife may cut into the quivering flesh, and the spirit be scarce conscious of a pang.
Love, ambition, and all the swarm of distracting desires will be driven from the soul in which the lamp of faith burns bright. Ordinary human motives will appeal in vain to the ears which have heard the tones of the heavenly music, and all the pomps of life will show poor and tawdry to the sight that has gazed on the vision of the great white throne and the crystal sea. The most ignorant and erroneous religious sentiment'--to use a modern phrase, is mightier than all other forces in the world's history. It is like some of those terrible compounds of modern chemistry, an inert, innocuous-looking drop of liquid. Shake it, and it flames heaven high, shattering the rocks and ploughing up the soil. Put even an adulterated and carnalised faith into the hearts of a mob of wild Arabs, and in a century they will stream from their deserts, and blaze from the mountains of Spain to the plains of Bengal. Put a living faith in Christ and a heroic confidence in the power of His Gospel to reclaim the worst sinners into a man's heart, and he will out of weakness be made strong, and plough his way through obstacles with the compact force and crashing directness of lightning. There have been men of all sorts who have been honoured to do much in this world for Christ. Wise and foolish, learned and ignorant, differing in tone, temper, creed, forms of thought, and manner of working, in every conceivable degree; but one thing, and perhaps one thing only, they have all had--a passion of enthusiastic personal devotion to their Lord, a profound and living faith in Him and in His salvation. All in which they differed is but the gay gilding on the soldier's coat. That in which they were alike is as the strong arm which grasps the sword, and has its muscles braced by the very clutch.
Faith is itself a source of strength, as well as the condition of drawing might from heaven.
Consider, too, how faith has power over men who see it. The exhibition of our own personal convictions has more to do in spreading them than all the arguments which we use. There is a magnetism and a contagious energy in the sight of a brother's faith which few men can wholly resist. If you wish me to weep, your own tears must flow; and if you would have me believe, let me see your soul heaving under the emotion which you desire me to feel. The arrow may be keen and true, the shaft rounded and straight, the bow strong, and the arm sinewy; but unless the steel be winged it will fall to the ground long before it strikes the butt. Your arrows must be winged with faith, else orthodoxy, and wise arrangements, and force and zeal, will avail nothing. No man will believe in, and no demon will obey, spells which the would-be exorcist only half believes himself. Even if he speak the name of Christ, unless he speak it with unfaltering confidence, all the answer he will get will only be the fierce and taunting question, Jesus I know, and Paul I know, but who are ye?' Brethren, let us give heed to the solemn rebuke which our Master lovingly reads to us in these words, and while we aim at the utmost possible perfection in all subordinate matters, let us remember that they all without faith are weak, as an empty suit of armour with no life beneath the corselet; and that faith without them all is strong, like the knight of old, who rode into the bloody field in simple silken vest, and conquered. That which determines our success or failure in the work of our Lord is our faith.