I. The opposing fortresses.
The Apostle conceives of himself and of his brother preachers of Christ as going forth on a merciful warfare. He thinks of strong rock fortresses, with lofty walls set on high, and frowning down on any assailants. No doubt he is thinking first of the opposition which he had to front in Corinth from the Judaisers to whom we have referred, but the application of the metaphor goes far beyond the petty strife in Corinth and carries for us the wholesome lesson that one main cause which keeps men back from Christ is a too high estimate of themselves. Some of us are enclosed in the fortress of self-sufficiency: we will not humbly acknowledge our dependence on God, and have turned self-reliance into the law of our lives. There are many voices, some of them sweet and powerful, which to-day are preaching that gospel. It finds eager response in many hearts, and there is something in us all to which it appeals. We are often tempted to say defiantly, 'Who is Lord over us?' And the teaching that bids us rely on ourselves is so wholly in accord with the highest wisdom and the noblest life that what is good and what is evil in each of us contribute to reinforce it. Self-dependence is a great virtue, and the mother of much energy and nobleness, but it is also a great error and a great sin. To be so self-sufficing as not to need externals is good; to be so self-sufficing as not to need or to see God is ruin and death. The title which, as one of our great thinkers tells us, a humourist put on the back of a volume of heterodox tracts, 'Every man his own redeemer,' makes a claim for self-sufficiency which more or less unconsciously shuts out many men from the salvation of Christ.
There is the fortress of culture and the pride of it in which many of us are to-day entrenched against the Gospel. The attitude of mind into which persons of culture tend to fall is distinctly adverse to their reception of the Gospel, and that is not because the Gospel is adverse to culture, but because cultured people do not care to be put on the same level with publicans and harlots. They would be less disinclined to go into the feast if there were in it reserved seats for superior people and a private entrance to them. If the wise and prudent were more of both, they would be liker the babes to whom these things are revealed, and they would be revealed to them too. Not knowledge but the superciliousness which is the result of the conceit of knowledge hinders from God, and is one of the strongest fortresses against which the weapons of our warfare have to be employed.
There is the fortress of ignorance. Most men who are kept from Christ are so because they know neither themselves nor God. The most widely prevailing characteristic of the superficial life of most men is their absolute unconsciousness of the fact of sin; they neither know it as universal nor as personal. They have never gone deeply enough down into the depths of their own hearts to have come up scared at the ugly things that lie sleeping there, nor have they ever reflected on their own conduct with sufficient gravity to discern its aberrations from the law of right, hence the average man is quite unconscious of sin, and is a complete stranger to himself. The cup has been drunk by and intoxicated the world, and the masses of men are quite unaware that it has intoxicated them.
They are ignorant of God as they are of themselves, and if at any time, by some flash of light, they see themselves as they are, they think of God as if He were altogether such an one as themselves, and fall back on a vague trust in the vaguer mercy of their half-believed-in God as their hope for a vague salvation. Men who thus walk in a vain show will never feel their need of Jesus, and the lazy ignorance of themselves and the as lazy trust in what they call their God, are a fortress against which it will task the power of God to make any weapons of warfare mighty to its pulling down.
II. The casting down of fortresses.
The first effect of any real contact with Christ and His Gospel is to reveal a man to himself, to shatter his delusive estimates of what he is, and to pull down about his ears the lofty fortress in which he has ensconced himself. It seems strange work for what calls itself a Gospel to begin by forcing a man to cry out with sobs and tears, Oh, wretched man that I am! But no man will ever reach the heights to which Christ can lift him, who does not begin his upward course by descending to the depths into which Christ's Gospel begins its work by plunging him. Unconsciousness of sin is sure to lead to indifference to a Saviour, and unless we know ourselves to be miserable and poor and blind and naked, the offer of gold refined by fire and white garments that we may clothe ourselves will make no appeal to us. The fact of sin makes the need for a Saviour; our individual sense of sin makes us sensible of our need of a Saviour.
Paul believed that the weapons of his warfare were mighty enough to cast down the strongest of all strongholds in which men shut themselves up against the humbling Gospel of salvation by the mercy of God. The weapons to which he thus trusted were the same to which Jesus pointed His disciples when, about to leave them, He said, 'When the Comforter is come He will convict the world of sin because they believe not in Me.' Jesus brought to the world the perfect revelation of the holiness of God, and set before us all a divine pattern of manhood to rebuke and condemn our stained and rebellious lives, and He turned us away from the superficial estimate of actions to the careful scrutiny of motives. By all these and many other ways He presented Himself to the world a perfect man, the incarnation of a holy God and the revelation and condemnation of sinful humanity. Yet, all that miracle of loveliness, gentleness, and dignity is beheld by men without a thrill, and they see in Him no 'beauty that they should desire Him,' and no healing to which they will trust. Paul's way of kindling penitence in impenitent spirits was not to brandish over them the whips of law or to seek to shake souls with terror of any hell, still less was it to discourse with philosophic calm on the obligations of duty and the wisdom of virtuous living; his appeal to conscience was primarily the pressing on the heart of the love of God in Christ Jesus our Lord. When the heart is melted, the conscience will not long continue indurated. We cannot look lovingly and believingly at Jesus and then turn to look complacently on ourselves. Not to believe on Him is the sin of sins, and to be taught that it is so is the first step in the work of Him who never merits the name of the Comforter more truly than when He convicts the world of sin.
For a Christianity that does not begin with the deep consciousness of sin has neither depth nor warmth and has scarcely vitality. The Gospel is no Gospel, and we had almost said, 'The Christ is no Christ' to one who does not feel himself, if parted from Christ, 'dead in trespasses and sins.' Our religion depends for all its force, our gratitude and love for all their devotion, upon our sense that 'the chastisement of our peace was laid upon Him, and that by His stripes we are healed.' Since He gave Himself for us, it is meet that we give ourselves to Him, but there will be little fervour of devotion or self-surrender, unless there has been first the consciousness of the death of sin and then the joyous consciousness of newness of life in Christ Jesus.
III. The captives led away to another land.