The new year means that certain times under copyright in America, due to Sonny Bono's law affecting items from 1923 forward are now in the public domain. These include Robert Frost's Stopping by Woods on a Snowy Evening previously featured on this blog in 2007. See here.
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 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.