Sanctification is a constant, progressive renewing of the whole man, whereby the new creature doth daily more and more die unto sin and live unto God. Regeneration is the birth, sanctification is the growth of this babe of grace. In regeneration the sun of holiness rises; in sanctification it keepeth its course, and shineth brighter and brighter unto the perfect day (Proverbs 4:18). The former is a specifical change from nature to grace (Ephesians 5:8); the latter is a gradual change from one degree of grace to another (Psalm 84:7), whereby the Christian goeth from strength to strength till he appear before God in Zion.
George Swinnock