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 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.
Wales reach semi-final
Despite appearances I am not unaware of Wales's porgress in the World Cup.
Sadly most of the games have been and, if successful will be, on a Sunday.
They appear to have made hard work of beating France but a win is a win.