Justification is the means whereby we appropriate the saving act of God in the past, and sanctification the promise of God's activity in the present and future...Justification is primarily concerned with the relation between man and the law of God, sanctification with the Christian's separation from the world until the second coming of Christ...Justification is the new creation of the new man, and sanctification is his preservation until the day of Jesus Christ.

Author: Dietrich Bonhoeffer