δικαιοποιέω
From LSJ
εἰ γάρ κεν καὶ σμικρὸν ἐπὶ σμικρῷ καταθεῖο καὶ θαμὰ τοῦτ᾽ ἔρδοις, τάχα κεν μέγα καὶ τὸ γένοιτο → for if you add only a little to a little and do this often, soon that little will become great (Hesiod W&D, 361-362)
English (LSJ)
act honestly, Simp. in Epict.p.129D.
Spanish (DGE)
obrar con justicia Origenes M.12.1148B, Simp.in Epict.63.7, Nil.M.79.520D.