So we have not only to look back to the Cross, but up to the Throne. From the Cross we hear a voice, 'It is finished.' From the Throne a voice, 'For Zion's sake I will not hold My peace, and for Jerusalem's sake I will not rest.'
II. Secondly, Christ's servants on earth derive from Him a like perpetual activity for the same object.
The Lord, who in the former portion of these verses declares His own purpose of unwearied action for Zion, associates with Himself in the latter portion the watchmen, whom He appoints and endows for functions in some measure resembling His own, and exercised with constancy derived from Him. 'I have set watchmen upon thy walls, O Jerusalem, which shall never hold their peace day nor night.' On the promise follows, as ever, a command (for all divine gifts involve the responsibility of their use, and it is not His wont either to bestow without requiring, or to require before bestowing), 'Ye that remind Jehovah, keep not silence.'
There is distinctly traceable before a reference to a two-fold form of occupation devolving on these Christ-sent servants. They are watchmen, and they are also God's remembrancers. In the one capacity as in the other, their voices are to be always heard. The former metaphor is common in the Old Testament, as a designation of the prophetic office, but, in the accordance with the genius of the New Testament, as expressed on Pentecost, when the Spirit was poured out on the lowly as well as on the high, on the young as on the old, and all prophesied, it may be fairly extended to designated not to some selected few, but the whole mass of Christian people. The watchman's office falls to be done by all who see the coming peril, and have a tongue to echo it forth. The remembrancer's priestly office belongs to every member of Christ's priestly kingdom, the lowest and least of whom has the privilege of unrestrained entry into God's presence-chamber, and the power of blessing the world by faithful prayer. What should we think of a citizen in a beleaguered city, who saw enemy mounting the very ramparts, and gave no alarm because that was the sentry's business? In such extremity every man is a soldier, and women and children can at least keep watch and raise shrill cries of warning. The gifts, then, here promised, and the duties that flow from them, are not the prerogatives or the tasks of any class or order, but the heritage and the burden of the Lord to every member of His Church.
Our voices should ever be heard on earth. A solemn message is committed to us, by the very fact of our belief in Jesus Christ and His work. With that faith come responsibilities of which no Christian can denude himself. To warn the wicked man to turn from His wickedness; to blow the trumpet when we see the sword coming; to catch ever gleaming on the horizon, like the spears of an army through the dust of the march, the outriders and advance-guard of the coming of Him whose coming is life or death to all, and to lift up our voices with strength and say, 'Behold your God'; to peal into the ears of men, sunken in earthliness and dreaming of safety, the cry which may startle and save; to ring out in glad tones to all who wearily ask, 'Watchman, what of the night? will the night soon pass?' the answer which the slow dawning east has breathed into our else stony lips, 'The morning cometh'; to proclaim Christ, who came once to put away sin by the sacrifice of Himself, who comes ever, through the ages, to bless and uphold the righteousness which He loves and to destroy the iniquity which He hates, who will come at the last to judge the world--this is the never-ending task of the watchmen on the walls of Jerusalem. The New Testament calls it 'preaching,' proclaiming as a herald does. And both metaphors carry one common lesson of the manner in which the work should be done. With clear loud voice, with earnestness and decision, with faithfulness and self-oblivion, forgetting himself in his message, must the herald sound out the will of his King, the largess of his Lord. And the watchman who stands on his watch-tower whole nights, and sees foemen creeping through the gloom, or fire bursting out among the straw-roofed cottages within the walls, shouts with all his might the short, sharp alarm, that wakes the sleepers to whom slumber were death. Let us ponder the pattern.