through sanctification of the spirit, and belief of the truth by sanctification is meant, not anything external, as reformation of life, obedience to the law, or outward submission to Gospel ordinances; but internal holiness, which lies in a principle of spiritual life in the soul, and in a principle of spiritual light on the understanding; in a flexion of the will to the will of God, and the way of salvation by Christ; in a settlement of the affections on divine and spiritual things, and in an implantation of all grace in the heart; and is called the sanctification of "the spirit", partly from the spirit or soul of man being the principal seat of it, and chiefly from the Spirit of God being the author of it; and this being a means fixed in the decree of election to salvation, shows that holiness is not the cause of election, yet is certain by it, and is necessary to salvation; and that the doctrine of election is no licentious doctrine, since it provides for and secures true and real holiness. "Truth" designs either the Lord Jesus Christ, who is the truth of types and promises, and the substance of the truth of the Gospel, in whom it lies, and by whom it comes; or the Gospel itself, which comes from the God of truth, lies in the Scriptures of truth, is dictated and directed into by the spirit of truth; the sum of it is Christ the truth, and has nothing in it but truth. The "belief" or "faith" of this intends, not an historical faith, or a mere assent to truth; but a cordial embracing of it, a receiving of the love of the truth, a feeling of the power of it unto salvation, and a believing in Christ, the substance of it; which is a seeing of him spiritually, and a going out of the soul to him in acts of hope; reliance, trust, and dependence; and this being also a means settled in the choice of men to salvation, makes it appear, that faith is no cause of election, but the effect of it; that it is necessary to salvation, and therefore appointed as a means; that it is certain to the elect by it, and that they therefore cannot be finally and totally deceived, or be carried away with the error of the wicked, or with the deceivableness of unrighteousness with which antichrist works.