신명기 1:12의 Chasidut

Moses spoke to the heads of the tribes of Israel (Numbers 30:2) - this is because, behold, the tzadik that wants to continue the Flows onto Israel needs to befriend other tzadikim, since through the talks that they have, the tzadik influences all of Israel, and they help him with this good to shut up the mouth of the Accuser through the merit of the many, which does not happen when one is alone because that demands great strength and a strong hand to shut up the Accuser in order not to let the Accuser dominate. And this is why Moshe our teacher says "how can I carry alone?" (Deut. 1:12) - meaning when I am alone without the companionship of other tzadikim it is a burden to me to continue to provide all that they need. And this is "Moses spoke to the heads of the tribes" - meaning that he befriended the tzadikim "of the Israelites" similarly to because of the Israelites, so as to continue the Flow to them. And don't overthink this.