It was good to be at the Westminster Fellowship on Monday where we had a bumper turn out to hear my father-in-law speak on the fellowship's founder,the late Dr Martyn Lloyd-Jones. Geoff spoke very openly and helpfully, his advantages being a personal acquaintance with the Doctor adn the length of time since his death. It is now more than 35 years since his death. Geoff spoke very admiringly of his godliness and his preaching power. he spoke clearly on his doctrinal oddities - his view of Romans 7, his belief in baptism being best administered as effusion for believers, his Congregationalism and lack of elders, etc. It was a treat to hear this description of such a significant servant of God. It was good too to have opportunity for discussiion. There was no official recording of the proceedings.
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.