Things were back to normal on Wednesday as we carried on in Leviticus with the firrst three verses of Leviticus. Taking a nod from Philip Eveson I decided just to focus on the Sabbath. I made ten points with an application. We seem all to be agreed on the place of the Lord's Day even though it is an unfashionable doctrine today.
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.