Parallel
Exodus 3:20
Swete's Septuagint · Berean Standard Bible
καὶ ἐκτείνας τὴν χεῖρα πατάξω τοὺς Αἰγυπτίους ἐν πᾶσι τοῖς θαυμασίοις μου οἷς ποιήσω ἐν αὐτοῖς, καὶ μετὰ ταῦτα ἐξαποστελεῖ ὑμᾶς.
So I will stretch out My hand and strike the Egyptians with all the wonders I will perform among them. And after that, he will release you.