I haven't reported on the last Sunday of the year yet. I decided to take two great new year texts - Philippians 4:6, 7 and Hebrews 10:23-25. I preached better in the morning than the evening but there will always be a difference one way or the other. At least two families were away but we had lots of visitors - mostly the family of one of my deacons (four of the five kids with spouses and seven granchildren) plus my own son and his wife and our three grandsons. I did the candy cane talk using the candy canes of our tree at home (bit sticky). Good congregations morning and evening then. We sang four of the five new year hymns in the book. We didn't do well with the one (to Endrys night) so we abandoned it and used the Amazing Grace tune. Amazing Grace is a new year song, of course, so we should have just sang that.
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 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.