II. They shall not again know the want of the means of grace, v. 20, 21. Here, 1. It is supposed that they might be brought into straits and troubles after this deliverance was wrought for them. It was promised (v. 19), that they should weep no more and that God would be gracious to them; and yet here it is taken for granted that God may give them the bread of adversity and the water of affliction, prisoners' fare (1 Kings xxii. 27), coarse and sorry food, such as the poor use. When one trouble is over we know not how soon another may succeed; and we may have an interest in the favour of God, and such consolations as are sufficient to prohibit weeping, and yet may have bread of adversity given us to eat and water of affliction to drink. Let us therefore not judge of love or hatred by what is before us. 2. It is promised that their eyes should see their teachers, that is, that they should have faithful teachers among them, and should have hearts to regard them and not slight them as they had done; and then they might the better be reconciled to the bread of adversity and the water of affliction. It was a common saying among the old Puritans, Brown bread and the gospel are good fare. A famine of bread is not so great a judgment as a famine of the word of God, Amos viii. 11, 12. It seems that their teachers had been removed into corners (probably being forced to shift for their safety in the reign of Ahaz), but it shall be so no more. Veritas non quærit angulos—Truth seeks no corners for concealment. But the teachers of truth may sometimes be driven into corners for shelter; and it goes ill with the church when it is so, when the woman with her crown of twelve stars is forced to flee into the wilderness (Rev. xii. 6), when the prophets are hidden by fifty in a cave, 1 Kings xviii. 4. But God will find a time to call the teachers out of their corners again, and to replace them in their solemn assemblies, which shall see their own teachers, the eyes of all the synagogue being fastened on them, Luke iv. 20. And it will be the more pleasing because of the restraint they have been for some time under, as light out of darkness, as life from the dead. To all that love God and their own souls this return of faithful teachers out of their corners, especially with a promise that they shall not be removed into corners any more, is the most acceptable part of any deliverance, and has comfort enough in it to sweeten even the bread of adversity and the water of affliction. But this is not all: 3. It is promised that they shall have the benefit, not only of the public ministry, but of private and particular admonition and advice (v. 21): "Thy ears shall hear a word behind thee, calling after thee as a man calls after a traveller that he sees going out of his road." Observe, (1.) Whence this word shall come—from behind thee, from some one whom thou dost not see, but who sees thee. "Thy eyes see thy teachers; but this is a teacher out of sight, it is thy own conscience, which shall now by the grace of God be awakened to do its office." (2.) What the word shall be: "This is the way, walk you in it. When thou art doubting, conscience shall direct thee to the way of duty; when thou art dull and trifling, conscience shall quicken thee in that way." As God has not left himself without witness, so he has not left us without guides to show us our way. (3.) The seasonableness of this word: It shall come when you turn to the right hand or to the left. We are very apt to miss our way; there are turnings on both hands, and those so tracked and seemingly straight that they may easily be mistaken for the right way. There are right-hand and left-hand errors, extremes on each side virtue; the tempter is busy courting us into the by-paths. It is happy then if by the particular counsels of a faithful minister or friend, or the checks of conscience and the strivings of God's Spirit, we be set right and prevented from going wrong. (4.) The success of this word: "It shall not only be spoken, but thy ears shall hear it; whereas God has formerly spoken once, yea, twice, and thou hast not perceived it (Job xxxiii. 14), now thou shalt listen attentively to these secret whispers, and hear them with an obedient ear." If God gives us not only the word, but the hearing ear, not only the means of grace, but a heart to make a good use of those means, we have reason to say, He is very gracious to us, and reason to hope he has yet further mercy in store for us.