This morning we had the first of our morning sessions with Scotsman David Meredith. He preached a fine expository sermon from Joshua 1 looking at the strong promises, everlasting presence, dominating precept and united people as found in the chapter. He had some nice illustrations including unused restaurant vouchers being like neglected promises and one I've heard him use before about his son turning orange due to a surfeit of carrot juice (though he didn't really press home the application - getting filled with the Word). People really appreciated this ministry. See here for recording.
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.