We began this morning with Stuart Olyott on 2 Corinthians 11 and 12. Stuart was his usual lucid and compelling self but with more humour than usual. I guess a difficult subject like suffering needed a light touch to some extent. His three key words were Restraint (a reminder to be restrained about talking of our sufferings), Reflection (Paul's sufferings and our so much lighter ones) and Refusal (refusing to be overwhelmed but looking to the Lord).
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.