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 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 Nuclear Powers
1. United States 2. Russia (formerly part of the Soviet Union) 3. United Kingdom 4. France 5. China 6. India 7. Pakistan 8. North Korea