So it was Christmas themes again yesterday and another 10 carols (that's twenty we've sung so far). In the morning we considered Joseph and lessons from his life, especially leading up to the birth of Jesus as described in Matthew 1 and in the evening we focused just on Matthew 1:21 and the naming of Jesus by Joseph. We had decent congregations morning and evening but no newcomers.
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.