3. If we take a special view of the church, we shall find what great things God has done, and will do, for it (v. 12, 13): You shall go out with joy, and be led forth with peace. This refers, (1.) To the deliverance and return of the Jews out of Babylon. They shall go out of their captivity, and be led forth towards their own land again. God will go before them as surely, though not as sensibly, as before their fathers in the pillar of cloud and fire. They shall go out, not with trembling, but with triumph, not with any regret to part with Babylon, or any fear of being fetched back, but with joy and peace. Their journey home over the mountains shall be pleasant, and they shall have the good-will and good wishes of all the countries they pass through. The hills and their inhabitants shall, as in a transport of joy, break forth into singing; and, if the people should altogether hold their peace, even the trees of the field would attend them with their applauses and acclamations. And, when they come to their own land, it shall be ready to bid them welcome; for, whereas they expected to find it all overgrown with briers and thorns, it shall be set with fir-trees and myrtle-trees: for, though it lay desolate, yet it enjoyed its sabbaths (Lev. xxvi. 34), which, when they were over, like the land after the sabbatical year, it was the better for. And this shall redound much to the honour of God and be to him for a name. But, (2.) Without doubt it looks further. This shall be for an everlasting sign, that it, [1.] The redemption of the Jews out of Babylon shall be a ratification of those promises that relate to gospel times. The accomplishment of the predictions relating to that great deliverance would be a pledge and earnest of the performance of all the other promises; for thereby it shall appear that he is faithful who has promised. [2.] It shall be a representation of the blessings promised and a type and figure of them. First, Gospel grace will set those at liberty that were in bondage to sin and Satan. They shall go out and be led forth. Christ shall make them free, and then they shall be free indeed. Secondly, It will fill those with joy that were melancholy. Ps. xiv. 7, Jacob shall rejoice, and Israel shall be glad. The earth and the inferior part of the creation shall share in the joy of this salvation, Ps. xciv. 11, 12. Thirdly, It will make a great change in men's characters. Those that were as thorns and briers, good for nothing but the fire, nay, hurtful and vexatious, shall become graceful and useful as the fir-tree and the myrtle-tree. Thorns and briers came in with sin and were the fruits of the curse, Gen. iii. 18. The raising of pleasant trees in the room of them signifies the removal of the curse of the law and the introduction of gospel blessings. The church's enemies were as thorns and briers; but, instead of them, God will raise up friends to be her protection and ornament. Or it may denote the world's growing better; instead of a generation of thorns and briers, there shall come up a generation of fir-trees and myrtles; the children shall be wiser and better than the parents. And, fourthly, in all this God shall be glorified. It shall be to him for a name, by which he will be made known and praised, and by it the people of God shall be encouraged. It shall be for an everlasting sign of God's favour to them, assuring them that, though it may for a time be clouded, it shall never be cut off. The covenant of grace is an everlasting covenant; for the present blessings of it are signs of everlasting ones.