WSC Q.35: What is sanctification?
Sanctification is the work of God’s free grace, (2 Thess. 2:13) whereby we are renewed in the whole man after the image of God, (Eph. 4:23–24) and are enabled more and more to die unto sin, and live unto righteousness. (Rom. 6:4,6, Rom. 8:1)
WLC Q.75: What is sanctification?
Sanctification is a work of God’s grace, whereby they whom God hath, before the foundation of the world, chosen to be holy, are in time, through the powerful operation of his Spirit (Eph. 1:4, 1 Cor. 6:11, 2 Thess. 2:13) applying the death and resurrection of Christ unto them, (Rom. 6:4–6) renewed in their whole man after the image of God; (Eph. 4:23–24) having the seeds of repentance unto life, and all other saving graces, put into their hearts, (Acts 11:18, 1 John 3:9) and those graces so stirred up, increased, and strengthened, (Jude 20, Heb. 6:11–12, Eph. 3:16–19, Col. 1:10–11) as that they more and more die unto sin, and rise unto newness of life. (Rom. 6:4,6,14, Gal. 5:24)
They, who are once effectually called, and regenerated, having a new heart, and a new spirit created in them, are further sanctified, really and personally, through the virtue of Christ’s death and resurrection, (1 Cor. 6:11, Acts 20:32, Phil. 3:10, Rom. 6:5–6) by His Word and Spirit dwelling in them, (John 17:17, Eph. 5:26, 2 Thess. 2:13) the dominion of the whole body of sin is destroyed, (Rom. 6:6,14) and the several lusts thereof are more and more weakened and mortified; (Gal. 5:24, Rom. 8:13) and they more and more quickened and strengthened in all saving graces, (Col. 1:11, Eph. 3:16–19) to the practice of true holiness, without which no man shall see the Lord. (2 Cor. 7:1, Heb. 12:14)