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.
Not too bad a start from Wales
So a draw with Ireland and a win over Scotland (27-23) today. They don't fill you with absolute confidence but they remain undefeated. Next game, home to France (Friday evening, Feb 26) will be a real crunch game.