We had a very good day last Lord's Day. We were only 8 at communion but slowly numbers grew in the morning meeting an even in the evening we were into double figures. One feature of the day was lots of visitors. There was a Nigerian lady, two unconnected Iranians (a man who we had been expecting and a woman who we had not), a Syrian man who has come before with his visiting Greek mother and in the evening a Vietnamese young man new to us. As ever lots of others missing. We looked at the next bit in Luke 15 in the morning and returned to Matthew (the end of Chapter 20) in the evening.
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.