(2.) That the Spirit of God shall come to us to be our sanctifier, v. 21. In the Redeemer there was a new covenant made with us a covenant of promises; and this is the great and comprehensive promise of that covenant, that God will give and continue his word and Spirit to his church and people throughout all generations. God's giving the Spirit to those that ask him includes the giving of them all good things, Luke xi. 13; Matt. vii. 11. This covenant is here said to be made with them, that is, with those that turn from transgression; for those that cease to do evil shall be taught to do well. But the promise is made to a single person—My Spirit that is upon thee, being directed either, [1.] To Christ as the head of the church, who received that he might give. The Spirit promised to the church was first upon him, and from his head that precious ointment descended to the skirts of his garments; and the word of the gospel was first put into his mouth; for it began to be spoken by the Lord. And all believers are his seed, in whom he prolongs his days, ch. liii. 10. Or, [2.] To the church; and so it is a promise of the continuance and perpetuity of the church in the world to the end of time, parallel to those promises that the throne and seed of Christ shall endure for ever, Ps. lxxxix. 29, 36; xxii. 30. Observe, First, How the church shall be kept up, in a succession, as the world of mankind is kept up, by the seed and the seed's seed. As one generation passes away another generation shall come. Instead of the fathers shall be the children. Secondly, How long it shall be kept up—henceforth and for ever, always, even unto the end of the world; for, the world being left to stand for the sake of the church, we may be sure that as long as it does stand Christ will have a church in it, though no always visible. Thirdly, By what means it shall be kept up; by the constant residence of the word and Spirit in it. 1. The Spirit that was upon Christ shall always continue in the hearts of the faithful; there shall be some in every age on whom he shall work, and in whom he shall dwell, and thus the Comforter shall abide with the church for ever, John xiv. 16. 2. The word of Christ shall always continue in the mouths of the faithful; there shall be some in every age who, believing with the heart unto righteousness, shall with the tongue make confession unto salvation. The word shall never depart out of the mouth of the church; for there shall still be a seed to speak Christ's holy language and profess his holy religion. Observe, The Spirit and the word go together, and by them the church is kept up. For the word in the mouths of our ministers, nay, the word in our own mouths, will not profit us, unless the Spirit work with the word, and give us an understanding. But the Spirit does his work by the word and in concurrence with it; and whatever is pretended to be a dictate of the Spirit must be tried by the scriptures. On these foundations the church is built, stands firmly, and shall stand for ever, Christ himself being the chief corner-stone.