My good friends at Abebbooks tell me that they sold this Latin Bible from 1491 last month and it was their most expensive sale. Ironically it's nicknamed the Poor Man's Bible but sold for £16,132. Their top 10 list also includds a first edition of Little Women and beautiful rare books about Egyptian archaeology, orchids and ornithology.
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.