I thought the death of Marshall Lytle, bass player with Bill Haley and the Comets, at the end of May (he was 79) was a good excuse to put this up from 1955. The bassist developed a lively stage presence, throwing his bass into the air, lifting it over his shoulder and riding it like a horse. The group landed their biggest hit in 1955 after a version of their classic recording of "Rock Around the Clock" appeared in the opening credits of the movie Blackboard Jungle.
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.