There were 12 of us on Wednesday including two new people. We pressed on with Leviticus and people were stimulated by it with several questions at the end. We also had a brief but fluent time of prayer with almost everyone praying. Very encouraging. Someone suggested there may be economic gradations in Chapter 2 as in Chapter 1. I checked it with Philip Eveson, whose commentary I am using. He was not keen on the idea.
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.