The similar phrase 'Worldly Christianity' is one used by Bonhoeffer. It's J Gresham Machen that I want to line up most closely with. See his Christianity and culturehere. 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.
We had the last of our Evangelical Library Autumn Lunch Time Lectures yesterday on Zoom. We were treated to a lecture on the forgotten Swiss Pierre Viret by Dr Ian Densham. We were about twenty all told but I wish there has been more. A recording will be avai;lable through the Library shortly and I hope to print up a written version for In Writing soon. Andrew Saywell, a Viret aficianado, was there. He pointed out that on the monument to the Reformers there is an oblique reference to him.
No sound judgement can be made unless it be in explicit conformity to God's express Word ... For in the Word of God we find an exact witness of the will of God in all he both approves and disapproves.