ἔκτοτε
From LSJ
οὗτος ὁ υἱός μου νεκρὸς ἦν καὶ ἀνέζησεν, ἦν ἀπολωλὼς καὶ εὑρέθη → This son of mine was dead and has come back to life. He was lost and he's been found.
English (LSJ)
Adv. for ἐκ τότε,
A thereafter, Socr.Rhod.1, Arr.An.1.26.4, Plu.Caes.48, POxy.486.9 (ii A.D.), Vett.Val.168.28, Sm.Is.16.13, Sch.D.T.p.427 H.: condemned by Luc.Sol.7.
German (Pape)
[Seite 782] von damals, seitdem, Sp., wie Ath. IV, 148 c; vgl. Lob. zu Phryn. p. 46.