I happened on this the other week. By the Candain author, Helen Humphries, it really is a great book. It is a brilliant idea (taking each year the Thames froze over from 1142 to 1895 and weaving a short story or something similar from known facts of that year) brilliantly executed (the prose is brief, evocative, beautiful and tells story both local and universal in feel). The hardback presentation (10 cm X 10.5 cm) including the lovely prints adds to the pleasure. Hunt it down.
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.