Let us look steadily at the _facts_ before us, and then, perchance, we may discern the _lessons_ associated with them. Isaiah desires to know how long his strange and sad mission is to continue; and the answer is, until its utter failure to save his fellow-countrymen from their sins and their impending doom has been demonstrated, until nothing but the mere life-germ of the nation is left. Here really are three facts, full of instruction for us to-day. I. _Isaiah's mission and the calamities he desired to avert by it were to work together._ There was thus a twofold appeal to the men of that generation; and at its close God might have repeated the challenge, "What could I have done more?" (chap. v. 4). Both by offers of mercy and manifestations of righteous anger He sought to deliver them from the doom towards which they madly hastened. Thus God deals with the world to-day: His preachers of righteousness and His judgments because of unrighteousness work side by side; this fact is a conclusive proof that God is not willing that the sinner should die. This is true of nations, and it is true of individuals. II. _Isaiah was to prosecute his mission to the end, notwithstanding the proofs that his efforts to deliver his fellow-countrymen were vain._ This is always the duty of God's messengers: they are to deliver their message, and reiterate it. Whether it is popular or unpopular is a thing of which they are not even to think! the one thing they have to consider and remember is, that it is true. III. _In the midst of all the calamities of his time, Isaiah was sustained by the assurance that the nation he loves should not utterly perish._ Nothing could hurt "the holy seed" that constituted its true life. The Church of to-day is full of imperfections; the forces of unbelief are marshalling themselves against her; it may be that she will again be tried by fierce persecutions: but the Lord's true prophet can survey all these possible calamities with calmness; he knows that "the holy seed" which constitutes her true life cannot be injured by them. Here, then, is instruction and encouragement for the Lord's prophet to-day. He is to preach the preaching which God has bidden him, regardless of everything but the fact that God had sent it forth. He is not to modify his message, to make it more palatable to his hearers. He must not cease to deliver it, although he sees that his hearers are hardening themselves against it, and so are bringing upon themselves a heavier doom. Comfort he will need, but he must find it in the fact that there is a "holy seed" to whom his ministry will be a blessing, and in whose salvation, if he be faithful to the end, he shall share.