I was sad to hear that Wales lost 2-0 to Belgium last night, especially as two sons and two nephews were at the Cardiff City Stadium to see it. That's two defeats in a row and must affect our FIFA ranking (37th). Serbia away next Tuesday. It's not easy being a Wales soccer fan.
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.