5.  This sanctification is an article of the covenant of redemption betwixt the Father and the Son, Isa. lii. 15, “So shall he sprinkle many nations.”  Chap. liii. 10, “He shall see his seed, and the pleasure of the Lord shall prosper in his hand.”  Christ, then, having this promised to him, must see to the accomplishment thereof, and will have it granted to him; seeing he hath fulfilled all that was engaged to by him—­having made his soul an offering for sin.

6.  This sanctification is promised in the covenant of grace, Jer. xxxiii. 8.  “And I will cleanse them from all their iniquity.”  Ezek. xxxvii. 23, “And I will cleanse them.”  So chap. xxxvi. 25, “Then will I sprinkle clean water upon you, and ye shall be clean; from all your filthiness, and from all your idols will I cleanse you.”  Now all the promises of the covenant of grace are confirmed to us in the Mediator.  For, “in him all the promises of the covenant are yea and amen,” 2 Cor. i. 20.

7.  He hath purchased and made sure to his own, the new nature, and the heart of flesh, which is also promised, Ezek. xxxvi. 26, and xi. 19.  Jer. xxxii. 39.  This is the new and lively principle of grace, the spring of sanctification, which cannot be idle in the soul; but must be emitting vital acts natively.

Yea, through him, are believers made partakers of the divine nature, which is a growing thing,—­young glory in the soul, 2 Pet. i. 3,4, “According as his divine power hath given unto us all things that pertain unto life and godliness, through the knowledge of him that hath called us to glory and virtue, whereby are given unto us exceeding great and precious promises, that by these we might be made partakers of the divine nature,” &c.

8.  The Spirit is promised, to cause us walk in his statutes, Ezek. xlvi. 27.  Now all these promises are made good to us in Christ, who is the cautioner of the covenant; yea, he hath gotten now the dispensing and giving out of the rich promises of the covenant, committed unto him; so as he is the great and glorious custodier of all purchased blessings.

9.  There are new waterings, breathings, and gales of the Spirit, given in Christ, Isa. xxvii. 3.  He must water his garden or vineyard every moment.  This is the north wind and the south wind that bloweth upon the garden, Cant. iv. 16.  He must be as the dew unto Israel, Hos. xiv. 5.

10.  Through Christ is the believer brought into such a covenant state, as giveth great ground of hope of certain victory.  He is not now under the law, but under grace; and hence inferreth the apostle, Rom. vi. 14, “That sin shall not have dominion over them.”  Being now under that dispensation of grace, whereby all their stock is in the Mediator’s hand, and at his disposal; and not in their own hand and power, as under the covenant of works, there is a sure ground laid down for constant supply and furniture in all necessities.

11.  Christ hath prayed for this, John xvii. 17, “Sanctify them through thy truth;” where the Lord is praying, that his disciples might be more and more sanctified, and so fitted and qualified for the work of the ministry they were to be employed in.  And what he prayed for them, was not for them alone, but also for the elect, proportionably, who are opposed to the world, for which he did not pray, verse 9.