רמב"ן — לא אוכל אנכי לבדי / אספה לי שבעים איש

Q — Moshe asks for help and Hashem gives him seventy elders. But how would more leaders solve his problem? They can't supply meat any more than he can. And even with multiple leaders, the people would still come complaining to Moshe, the one who took them out of Egypt.

A — Ramban offers two readings of what Moshe actually needed. (1) Social management — the elders are not for material problem-solving but for calming the crowd. 'בהיות להם מנהיגים רבים ישככו חמתם וידברו על לבם בעת תלונתם.' Their skill-set is people skills, the ability to talk down a mob in distress. (2) Distributed legitimacy — once the elders prophesy and the spirit visibly rests on them, the people will recognize them as authentic leaders ('נאמנים הם לנביאים') and direct requests to them too, lightening Moshe's load. The chiddush distinguishes administrative leadership from spiritual authority, and shows how each can ease a singular leader's burden in different ways.