(a) Zeal is good for a Christian's own soul. We all know that exercise is good for the health, and that regular employment of our muscles and limbs promotes our bodily comfort, and increases our bodily vigour. Now that which exercise does for our bodies, zeal will do for our souls. It will help mightily to promote inward feelings of joy, peace, comfort, and happiness. None have so much enjoyment of Christ as those who are ever zealous for His glory,—jealous over their own walk,—tender over their own consciences,—full of anxiety about the souls of others,—and ever watching, working, labouring, striving, and toiling to extend the knowledge of Jesus Christ upon earth. Such men live in the full light of the sun, and therefore their hearts are always warm. Such men water others, and therefore they are watered themselves. Their hearts are like a garden daily refreshed by the dew of the Holy Ghost. They honour God, and so God honours them.
I would not be mistaken in saying this. I would not appear to speak slightingly of any believer. I know that "the Lord takes pleasure in all His people." (Ps. cxlix. 4.) There is not one, from the least to the greatest,—from the smallest child in the kingdom of God, to the oldest warrior in the battle against Satan,—there is not one in whom the Lord Jesus Christ does not take great pleasure. We are all His children,—and however weak and feeble some of us may be, "as a father pitieth his children, so does the Lord pity them that love and fear Him." (Ps. ciii. 13.) We are all the plants of His own planting;—and though many of us are poor, weakly exotics, scarcely keeping life together in a foreign soil,—yet as the gardener loves that which his hands have reared, so does the Lord Jesus love the poor sinners that trust in Him. But while I say this, I do also believe that the Lord takes special pleasure in those who are zealous for Him,—in those who give themselves body, soul, and spirit, to extend His glory in this world. To them He reveals Himself, as he does not to others. To them He shows things that other men never see. He blesses the work of their hands. He cheers them with spiritual consolations, which others only know by the hearing of the ear. They are men after His own heart, for they are men more like Himself than others. None have such joy and peace in believing,—none have such sensible comfort in their religion,—none have so much of "heaven upon earth" (Deut. xi. 21),—none see and feel so much of the consolations of the Gospel as those who are zealous, earnest, thorough-going, devoted Christians. For the sake of our own souls, if there were no other reason, it is good to be zealous,—to be very zealous in our religion.
(b) As zeal is good for ourselves individually, so it is also good for the professing Church of Christ generally. Nothing so much keeps alive true religion as a leaven of zealous Christians scattered to and fro throughout a Church. Like salt, they prevent the whole body falling into a state of corruption. None but men of this kind can revive Churches when ready to die. It is impossible to over-estimate the debt that all Christians owe to zeal. The greatest mistake the rulers of a Church can make is to drive zealous men out of its pale. By so doing they drain out the life-blood of the system, and hasten on ecclesiastical decline and death.
Zeal is in truth that grace which God seems to delight to honour. Look through the list of Christians who have been eminent for usefulness. Who are the men that have left the deepest and most indelible marks on the Church of their day? Who are the men that God has generally honoured to build up the walls of His Zion, and turn the battle from the gate? Not so much men of learning and literary talents, as men of zeal.
Bishop Latimer was not such a deeply-read scholar as Cranmer or Ridley. He could not quote Fathers from memory, as they did. He refused to be drawn into arguments about antiquity. He stuck to his Bible. Yet it is not too much to say that no English reformer made such a lasting impression on the nation as old Latimer did. And what was the reason? His simple zeal.
Baxter, the Puritan, was not equal to some of his contemporaries in intellectual gifts. It is no disparagement to say that he does not stand on a level with Manton or Owen. Yet few men probably exercised so wide an influence on the generation in which he lived. And what was the reason? His burning zeal.
Whitefield, and Wesley, and Berridge, and Venn were inferior in mental attainments to Bishops Butler and Watson. But they produced effects on the people of this country which fifty Butlers and Watsons would probably never have produced. They saved the Church of England from ruin. And what was one secret of their power? Their zeal.
These men stood forward at turning points in the history of the Church. They bore unmoved storms of opposition and persecution.—They were not afraid to stand alone. They cared not though their motives were misinterpreted.—They counted all things but loss for the truth's sake.—They were each and all and every one eminently men of one thing:—and that one thing was to advance the glory of God, and to maintain His truth in the world. They were all fire, and so they lighted others.—They were wide awake, and so they awakened others.—They were all alive, and so they quickened others.—They were always working, and so they shamed others into working too.—They came down upon men like Moses from the mount.—They shone as if they had been in the presence of God.—They carried to and fro with them, as they walked their course through the world, something of the atmosphere and savour of heaven itself.
There is a sense in which it may be said that zeal is contagious. Nothing is more useful to the professors of Christianity than to see a real live Christian, a thoroughly zealous man of God. They may rail at him,—they may carp at him,—they may pick holes in his conduct,—they may look shy upon him,—they may not understand him any more than men understand a new comet when a new comet appears;—but insensibly a zealous man does them good. He opens their eyes. He makes them feel their own sleepiness. He makes their own great darkness visible. He obliges them to see their own barrenness. He compels them to think, whether they like it or not—"What are we doing? Are we not no better than mere cumberers of the ground?" It may be sadly true that "one sinner destroyeth much good;" but it is also a blessed truth that one zealous Christian can do much good. Yes: one single zealous man in a town,—one zealous man in a congregation,—one zealous man in a society,—one zealous man in a family, may be a great, a most extensive blessing. How many machines of usefulness such a man sets a going! How much Christian activity he often calls into being which would otherwise have slept! How many fountains he opens which would otherwise have been sealed! Verily there is a deep mine of truth in those words of the Apostle Paul to the Corinthians: "Your zeal hath provoked very many." (2 Cor. ix, 2.)
(c) But, as zeal is good for the Church and for individuals, so zeal is good for the world. Where would the Missionary work be if it were not for zeal? Where would our City Missions and Ragged Schools be if it were not for zeal? Where would our District-Visiting and Pastoral Aid Societies be if it were not for zeal? Where would be our Societies for rooting out sin and ignorance, for finding out the dark places of the earth, and recovering poor lost souls? Where would be all these glorious instruments for good if it were not for Christian zeal? Zeal called these institutions into being, and zeal keeps them at work when they have begun. Zeal gathers a few despised men, and makes them the nucleus of many a powerful Society. Zeal keeps up the collections of a Society when it is formed. Zeal prevents men from becoming lazy and sleepy when the machine is large and begins to get favour from the world. Zeal raises up men to go forth, putting their lives in their hands, like Moffatt and Williams in our own day. Zeal supplies their place when they are gathered into the garner, and taken home.