Why does the Torah need to mention that Yocheved was Amram's wife?
Why does the Torah add "asher Yaldah Osah le'Levi be'Mitzrayim"?
Rashi and Targum Yonasan: To teach us that Levi's wife gave birth in Egypt ? but her pregnancy occurred earlier 1 .
Ramban and Moshav Zekenim: Because all of Ya'akov's sons went down to Egypt with their sons and grandsons. None of Ya'akov's children bore more children in Egypt, with the sole exception of Yocheved. 2
Rashi: Beecause she was born as they entered its walls - completing the seventy souls who entered Egypt.
Ramban and Moshav Zekenim: Hashem held her back from giving birth earlier, because (she gave birth to the redeemers ? Moshe, Aharon and Miriam - and) the time of the redemption had not yet arrived.
Who bore Yocheved?
Rashi: Levi's wife - It is a short Pasuk, which omits the obvious.
Da'as Zekenim and Hadar Zekenim: Some say that "Osah" was the name of Levi's wife.