φωλευτέον
From LSJ
τὰ καλὰ καὶ συμφέροντα ταῖς ψυχαῖς ἡμῶν καὶ εἰρήνην τῷ κόσμῳ → what is good and profitable to our souls, and for peace to the world
English (LSJ)
one must lie hid, lurk, Eun.VSp.476B.
Greek (Liddell-Scott)
φωλευτέον: ῥημ. ἐπίθετ. τοῦ φωλεύω, δεῖ φωλεύειν, Εὐνάπ. 54.