Then came until him the tempter, and said: if thou be the son of God, command that these stones be made bread. He answered and said: it is written, man shall not live only by bread, but by every word that proceedeth out of the mouth of God.
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.