Madam, when you are come to the other side of the water, and have set down your foot on the shore of glorious eternity, and look back again to the waters, and to your wearisome journey, and shall see in that clear glass of endless glory nearer to the bottom of God's wisdom, you shall then be forced to say, “If God had done otherwise with me than he hath done, I had never come to the enjoying of this crown of glory.”
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 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.