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
[Seite 978] ἐστι, = συμβαίνει, Pol. 9, 2, 4.
συμβᾰτόν: ἐστι = συμβαίνει, Πολύβ. 9. 2, 4.