I suppose yesterday was a fairly typical day in Childs Hill. By 11 am a fairly sparse congregation gathered growing eventually into something decent. Most of our regulars were there and there were visitors too. An eastern gentleman we haven't seen in ages, an African I had never seen before, two different Iranians who have been before but weren't there last week. In the evening we were many fewer, under twenty. There was a Romanian visitor. We had communion before the evening service, singing unaccompanied as we do. I preached on Revelation 2:1-7 in the morning, the letter to the church of Ephesus and in the evening on Judges 3:7-11, the story of the first judge Othniel.
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.