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 culturehere. 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.
10 Famous rabbits (fictional)
1. Brer Rabbit 2. Peter Rabbit 3. Miffy 4. Bugs Bunny 5. Rabbit (A A Milne's) 6. Roger Rabbit 7. Thumper 8. Benjamin Bunny 9. Jessica Rabbit 10. The White Rabbit