III. The covenant of peculiarity likewise shall be secured and the promises of that covenant shall have their full accomplishment in the gospel Israel. Observe, 1. How this covenant was looked upon as broken during the captivity, v. 24. God asks the prophet, "Hast though not heard, and dost thou not consider, what this people have spoken?" either the enemies of Israel, who triumphed in the extirpation of a people that had made such a noise in the world, or the unbelieving Israelites themselves, "this people among whom thou dwellest;" they have broken covenant with God, and then quarrel with him as if he had not dealt faithfully with them. The two families which the Lord hath chosen, Israel and Judah, whereas they were but one when he chose them, he hath even cast them off. "Thus have they despised my people, that is, despised the privilege of being my people as if it were a privilege of no value at all." The neighbouring nations despised them as now no more a nation, but the ruins of a nation, and looked upon all their honour as laid in the dust; but, 2. See how firm the covenant stands notwithstanding, as firm as that with day and night; sooner will God suffer day and night to cease then he will cast away the seed of Jacob. This cannot refer to the seed of Jacob according to the flesh, for they are cast away, but to the Christian church, in which all these promises were to be lodged, as appears by the apostle's discourse, Rom. xi. 1, &c. Christ is that seed of David that is to be perpetual dictator to the seed of Abraham, Isaac, and Jacob; and, as this people shall never want such a king, so this king shall never want such a people. Christianity shall continue in the dominion of Christ, and the subjection of Christians to him, till day and night come to an end. And, as a pledge of this, that promise is again repeated, I will cause their captivity to return; and, having brought them back, I will have mercy on them. To whom this promise refers appears Gal. vi. 16, where all that walk according to the gospel rule are made to be the Israel of God, on whom peace and mercy shall be.