The Greek translator pays attention to the details of the dramatis personae. In the beginning of the story (2:1), the Hebrew text says וילך איש מבית לוי ויקח את בת לוי ("A man from the household of Levi took/married a daughter of Levi") while the Greek provides a more general description: Ἦν δέ τις ἐκ τῆς φυλῆς Λευι, ὃς ἔλαβεν τῶν θυγατέρων Λευι ("There was someone from the tribe of Levi who took one of the daughters of Levi"). MT's description of Moses' choice of a wife is thus more detailed, referring to a single daughter of Levi, while according to the LXX Moses chose one of several daughters of Levi.

Aejmelaeus ("What Can We Know", pp. 111-12) concludes that the extensive pluses of the LXX are due to the Hebrew Vorlage of LXX, since the translator's freedom in rendering does not necessarily imply that he would add material, and in some cases the pluses are attested in other texts such as Qumran fragments or the Samaritan Pentateuch. However, Wevers believes that the translator was responsible for expansions, out of a desire to clarify the text and to harmonise it with Deuteronomy.