I am at the Grace Baptist Assembly today. This is the start of a three day conference that began at lunch time today and will end lunch time Thursday. I did n't get here until the second of the three messages today was almost over. I listened, however, to the opener from Malcolm McGregor (you can do the same here) a Schaefferesque state of play address full of interesting things and will get round to the news session with Ruslan Antonov from Ukraine later. Paul Lintott gave us a very helpful summary of Luther's rediscovery of justification by faith and applied it well.
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.