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 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.
55 years old
I was 55 last week and my wonderful wife arranged for us to enjoy a lovely meal at a local pizzeria. It was a very nice time.
(My youngest was with us most of the time but seems to have been hiding when these were taken).