Another interest of mine. My wife said that Ray Davies looks a bit like the Welsh actor Jonathan Pryce, with which I agree (though it is hard to show). The Internet I notice goes more for Pryce and the current Pope.
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.