Do you then, my son, diligently apply yourself to the reading of the sacred Scriptures. Apply yourself, I say. For we who read the things of God need much application, lest we should say or think anything too rashly about them. And applying yourself thus to the study of the things of God, with faithful prejudgments such as are well pleasing to God, knock at its locked door, and it will be opened to you by the porter, of whom Jesus says, To him the porter opens. And applying yourself thus to the divine study, seek aright, and with unwavering trust in God, the meaning of the holy Scriptures, which so many have missed. Be not satisfied with knocking and seeking; for prayer is of all things indispensable to the knowledge of the things of God. For to this the Saviour exhorted, and said not only, Knock, and it shall be opened to you; and seek, and you shall find, but also, Ask, and it shall be given unto you. Origen (Letter to Gregory)
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.