Ten of us met last night to look at just one verse from 2 Timothy 2 - verse 14. I made two points - that ministers are to remind you of certain things, which I did, and that they are to warn you against word wars. I backed up what I was saying firstly with quotations from several hymns a secondly with several anecdotes. I was quite and we got down to praying quite speedily. Most people prayed, if not all. We finished with a hymn. There were people missing sadly. Not sure why.
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.