Westminster Confession of Faith

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,²⁶⁶ by His Word and Spirit dwelling in them:²⁶⁷ the dominion of the whole body of sin is destroyed,²⁶⁸ and the several lusts thereof are more and more weakened and mortified;²⁶⁹ and they more and more quickened and strengthened in all saving graces,²⁷⁰ to the practice of true holiness, without which no man shall see the Lord.²⁷¹

This sanctification is throughout, in the whole man;²⁷² yet imperfect in this life, there abiding still some remnants of corruption in every part:²⁷³ whence ariseth a continual and irreconcilable war; the flesh lusting against the Spirit, and the Spirit against the flesh.²⁷⁴

In which war, although the remaining corruption, for a time, may much prevail;²⁷⁵ yet through the continual supply of strength from the sanctifying Spirit of Christ, the regenerate part doth overcome;²⁷⁶ and so, the saints grow in grace,²⁷⁷ perfecting holiness in the fear of God.²⁷⁸