Parallel
Exodus 10:22
Swete's Septuagint · Berean Standard Bible
ἐξέτεινεν δὲ Μωυσῆς τὴν χεῖρα εἰς τὸν οὐρανόν, καὶ ἐγένετο σκότος γνόφος θύελλα ἐπὶ πᾶσαν γῆν Αἰγύπτου τρεῖς ἡμέρας.
So Moses stretched out his hand toward heaven, and total darkness covered all the land of Egypt for three days.