Why the Princes Came to Moses First and Who May Annul Vows

(Exodus 34:31-32) "And Moses called to them, and they returned to him." Since it is said (Numbers 10:3-4), "And they shall blow with them; and if they blow with one," but we have not heard to where, behold I reason. "Blowing" is stated here, concerning the congregation, and "blowing" is stated concerning the princes. Just as the blowing stated concerning the congregation is at the entrance of the Tent of Meeting, so the blowing stated concerning the princes is at the entrance of the Tent of Meeting. Or, perhaps the one who comes first in Scripture comes first in deed? Scripture teaches, "And Moses spoke to the heads of the tribes, to the children of Israel" (Numbers 30:2). Since statements were said in the Torah without specification, and Scripture specified in one of them that the princes come first, so I specify in all the statements in the Torah that the princes come first. Rabbi Yonatan says, it is not necessary, for it has already been said, "And Moses called to them, and Aaron and all the princes returned to him" and so forth, and afterward all the children of Israel drew near. Since a statement was said in the Torah without specification, and Scripture specified for you in one of them that the princes come first, and so forth. And what does Scripture teach by saying "to the heads of the tribes"? It comes to teach you that the annulment of vows is only by experts. (Exodus 34:34) "And he would go out and speak to the children of Israel" (this is written in remez 282).