I often complain about the poor Bible knowledge displayed by the University Cheallenge teams. All credit to UCL last night though; they got all three questions bang on. The first was on the third book of the Bible, the second on Elisha and the bears and the third on Canaan, Ham and Noah (The UCL Captain reminded me of Ryan Giggs)..
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.