God communicated to them through a tradition from Jacob, which Jacob handed down to Joseph, Joseph to his brothers, and Asher, the son of Jacob, handed down to his daughter Serah, who was still alive at the time of Moses and Aaron. Asher told Serah that any redeemer who would come and say the password to the Israelites would be their true deliverer. So when Moses came and said the password, the people believed him at once. Rabbi Samuel ben Naḥman taught that Benjamin's son's names, as listed in , reflected Benjamin's loss of Joseph. The name Bela signified that Benjamin's brother was swallowed up (nit-bala) from him; Becher signified that he was a firstborn (bechor); Ashbel signified that he was taken away captive (nishbah); Gera signified that he became a stranger (ger) in a strange country; Naaman signified that his actions were seemly (na'im) and pleasant (ne'im-im); Ehi signified that he indeed was "my brother" (ahi); Rosh signified that he was Benjamin's superior (rosh); Muppim signified that he was exceedingly attractive (yafeh ‘ad me'od) in all matters; and Huppim signified that Benjamin did not see his marriage-canopy (huppah) and he did not see Benjamin's; and Ard signified that he was like a rose-bloom (ward). Abaye cited the listing for Dan in to demonstrate that sometimes texts refer to "sons" in the plural when they mean a single son. But Rava suggested perhaps the word "Hushim" in was not a name but, as taught by the Academy of Hezekiah, the word "clusters" or "leaves," thus signifying that Dan's sons were as numerous as the leaves of a reed. Rava found, however, support in and 1 Chronicles for the proposition that sometimes texts refer to "sons" when they mean a single son. Abba Halifa of Keruya asked Rabbi Hiyya bar Abba why reported that 70 people from Jacob's household came to Egypt, while enumerated only 69 individuals. Rabbi Hiyya first argued that the Hebrew word et preceding Dinah in indicated that Dinah had a twin sister, and the twin brought the total to 70. But Abba Halifa responded that if that were so, then the parallel language of would indicate that Benjamin also had a twin sister. Rabbi Hiyya then revealed his real explanation, which he called "a precious pearl": Rabbi Hama bar Hanina taught that the seventieth person was Moses' mother Jochebed, who was conceived on the way from Canaan