προϋπάρχειν
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
Greek > English (Woodhouse Verbs Reversed)
(see also προϋπάρχω): begin, be first to do a thing, be the first to do a thing