The saints have both their spiritual excellency and blessedness by the gift of the Holy Ghost, or Spirit of God, and his dwelling in them. They are not only caused by the Holy Ghost, but are in the Holy Ghost as their principle. The Holy Spirit becoming an inhabitant, is a vital principle in the soul: he, acting in, upon and with the soul, becomes a fountain of true holiness and joy, as a spring is of water, by the exertion and diffusion of itself: John iv. 14, "But whosoever drinketh of the water that I shall give him, shall never thirst; but the water that I shall give him, shall be in him a well of water springing up into everlasting life,"--compared with chap. vii. 38, 39, "He that believeth on me, as the Scripture hath said, out of his belly shall flow rivers of living water; but this spake he of the Spirit, which they that believe on him should receive." The sum of what Christ has purchased for us is that spring of water spoken of in the former of those places, and those rivers of living water spoken of in the latter. And the sum of the blessings which the redeemed shall receive in heaven is that river of water of life that proceeds from the throne of God and the Lamb, Rev. xxii. 1,--which doubtless signifies the same with those rivers of living water explained John vii. 38, 39, which is elsewhere called the "river of God's pleasures." Herein consists the fulness of good which the saints receive by Christ. 'Tis by partaking of the Holy Spirit that they have communion with Christ in his fulness. God hath given the Spirit, not by measure unto him, and they do receive of his fulness, and grace for grace. This is the sum of the saints' inheritance; and therefore that little of the Holy Ghost which believers have in this world is said to be the earnest of their inheritance. 2 Cor. i. 22, "Who hath also sealed us, and given us the Spirit in our hearts." And chap. v. 5, "Now he that hath wrought us for the selfsame thing is God, who also hath given unto us the earnest of the Spirit." And Eph. i. 13, 14, "Ye were sealed with that Holy Spirit of promise, which is the earnest of our inheritance, until the redemption of the purchased possession."