I vlogged recently commending O Palmer Robertson's version of Matthew Henry's Method of Prayer. I noticed recently that there is a website here with many resources in connection with Henry's book, organised by Ligon Dincan III.
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.