Targum Yonasan: They were the sons of Elitzafan ben Parnach, ¹ to whom Yocheved, Moshe' mother, bore them, after Amram divorced her in Egypt, following the decree to kill all the newborn baby boys, ² and he married her. ³

Rashi and Rashbam (citing Sanhedrin, 17a) and Targum Yonasan: They were originally chosen to become elders, but they remained in the camp, because they considered themselves unworthy of becoming communal leaders. ¹

Rashi (on Pasuk 28): They prophesied that Moshe would die and that Yehoshua, would take Yisrael into Eretz Yisrael.

Targum Yonasan: Eldad prophesied that Moshe would die and that Yehoshua, would take Yisrael into Eretz Yisrael and inherit them the land, Meidad, about the quails and their consequences, ¹ and both of them, about Gog and Magog and about Techi'as ha'Meisim. ²

Rashi: Moshe initially chose seventy-two elders, six from each tribe, even though he required only seventy elders, ¹ and he knew that no tribe would willingly forego one candidate.

Targum Onkelos and Targum Yonasan: It implies that, unlike the other seventy elders, ¹ they merited a direct spirit of prophecy. ²