Men who hold the office of the ministry should have the heart of a mother toward the church; for if they have no such heart, they soon become lazy and disgusted, and suffering, in particular, will find them unwilling … Unless your heart toward the sheep is like that of a mother toward her children- a mother, who walks through fire to save her children- you will not be fit to be a preacher. Labor, work, unthankfulness, hatred, envy, and all kinds of sufferings will meet you in this office. If, then, the mother heart, the great love, is not there to drive the preachers, the sheep will be poorly served.
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.