Parallel
Exodus 19:1
Swete's Septuagint · Berean Standard Bible
τοῦ δὲ μηνὸς τοῦ τρίτου τῆς ἐξόδου τῶν υἱῶν Αἰγύπτου τῇ ἡμέρᾳ ταύτῃ ἤλθοσαν εἰς τὴν ἔρημον τοῦ Σεινά.
In the third month, on the same day of the month that the Israelites had left the land of Egypt, they came to the Wilderness of Sinai.