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 culturehere. 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.
Carols with uses 3
The final verse of Thomas Pestel's Behold, the gret Creator makes is all application
Join then all hearts that are not stone, and all our voices prove,
to celebrate this holy One, the God of peace and love.