Do note that the Annual Lecture of The Evangelical Library for 2014 will be held at 6:30 pm at the Library when Andrew Atherstone (Wycliffe Hall, Oxford) will lecture on “George Whitefield: Eulogies and Elegies in England and New England” All are very welcome.
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.