“He’s so heavenly minded that he’s no earthly good.”
Have you ever heard that said of someone? It’s a ludicrous statement. Finally, while I was attending seminary, a chapel speaker acknowledged that he’s yet to ever meet someone like this, and he’s right. He never will. You can be out of touch and ineffective for a number of reasons, but it’s not because your mind is set on things above (Colossians 3).
This notion of holiness as incompatible with real life is pervasive. People withdraw from the world and from their community to not be of the world. The problem is they are still of the world. This is not a sanctifying move. Our sin problem is not due to geographical proximity to the world, but rather our lack of proximity to the Lord.
The result: We end up still being of the world, and not being in it. We live in complete opposition to John 17:15-16.
My honest belief is that the more we are not of the world, the more we will live out the Great Commission, and the more we will be in the world. The more we are not of the world, the more we will recognize we have to be in the world.