Exodus 6:7

καὶ λήμψομαι ἐμαυτῷ ὑμᾶς λαὸν ἐμοὶ καὶ ἔσομαι ὑμῶν θεός καὶ γνώσεσθε ὅτι ἐγὼ κύριος ὁ θεὸς ὑμῶν ὁ ἐξαγαγὼν ὑμᾶς ἐκ τῆς καταδυναστείας τῶν Αἰγυπτίων