Paul uses two terms: to increase and abound, to increase and flow over, you might translate it. To increase and to increase excessively in love.
How is our faith? Is it applied every day in prayer for holiness, for the overcoming of besetting sins, for the self-control in all things, for kindness to grow and to be shown one toward another. Holiness, the root meaning of holiness is separateness, apartness, distinctiveness. You cannot be holy and be worldly. You cannot be holy and be indistinguishable from a worldling. You cannot be holy and rooted in all the entertainments and the ideology in this vain world. You cannot be holy and a worldling at the same time. The root of holiness is distinctiveness, separateness, apartness for God.
The apostle throughout is concerned about the application of faith and the apartness of the people of God. We are called to live separated lives. And we live in a time when strangely the church of Jesus Christ has never been more tempted to worldliness – days of affluence, days of availability, days when the world is not confined to the bawdy bar at the end of the road or the playhouse theatre at the end of the road, days when worldliness is now pumped into every home and is on every mobile and on every television and all around us and everywhere. We have never been more threatened by worldliness. It is everywhere. Have we a call in such a day and age to be the saints, the apart-ones? So it is a challenge for us all. Are we separated for the Lord, keep ourselves pure, keep ourselves away from worldliness?