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.
The similar phrase 'Worldly Christianity' is one used by Bonhoeffer. 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.