I understand that Grace Baptist Mission have appointed Daryl Jones as their new Mission Co-ordinator to succeed John McDonald when he retires. Daryl will eventually begin alongside John next June for a transition period. Daryl is currently pastor of Bethel FIEC in Liverpool and has served in other pastorates previous to this one as well as working for UCCF in the past. His wife Julia is well known as a speaker to women.
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.