A little behind here but had a god day on Sunday as we carried on with Ezra (Era 2 - not an easy passage but full of thought provoking detail regarding mission) and Matthew 5 (the second four beatitudes - always challenging to consider). We had good varied congregations am and pm, though as ever some were missing. A local lady turned up am who said she had converted from Islam. I do hope we see her again. Visitors often come and then disappear. We have often thought of how we can keep closer tabs on people but in the end we can only hope to get to know people over a period of time. I can think of at least four visitors in recent weeks who we haven't seen now for a week or two. You often do not know quite why they have disappeared. (There was a time when my wife was paranoid that it might be her cooking - as if).
Bonhoeffer uses a similar phrase 'worldly Christianity'. It's J Gresham Machen that I want to line up most closely with. See his Christianity and culture here. Having done commentaries on Proverbs (Heavenly Wisdom) and Song of Songs (Heavenly Love), a matching title for Ecclesiastes would be Heavenly Worldliness. For my stance on worldliness, see 3 posts here.