Genesis 46:15

אלה בני לאה ואת דינה בתו THESE ARE THE SONS OF LEAH WITH HIS DAUGHTER DINAH. — Scripture associates the men with the name of Leah and the women with that of Jacob for the reason given the Talmud (Niddah 31a). שלשים ושלש THIRTY THREE — But in the enumeration above you will find only thirty-two. The one whose name is omitted is Jochebed who was born “between the walls” just as they entered the border city, as it is said (Numbers 26:59) “Jochebed, the daughter of Levi, whom her mother bore to Levi in Egypt — she was born in Egypt, but she was not conceived in Egypt (Bava Batra 123).

These are the sons of Le᾽a, whom she bore to Ya῾aqov in Paddan-aram, with his daughter Dina: all the souls of his sons and his daughters were thirty three.

אֵ֣לֶּה ׀ בְּנֵ֣י לֵאָ֗ה אֲשֶׁ֨ר יָֽלְדָ֤ה לְיַעֲקֹב֙ בְּפַדַּ֣ן אֲרָ֔ם וְאֵ֖ת דִּינָ֣ה בִתּ֑וֹ כׇּל־נֶ֧פֶשׁ בָּנָ֛יו וּבְנוֹתָ֖יו שְׁלֹשִׁ֥ים וְשָׁלֹֽשׁ׃