16Then the Lord said to Moses, “Gather for Me seventy of Israel’s elders of whom you have experience as elders and officers of the people, and bring them to the Tent of Meeting and let them take their place there with you. 17I will come down and speak with you there, and I will draw upon the spirit that is on you and put it upon them; they shall share the burden of the people with you, and you shall not bear it alone. Numbers 11/16-17 Tanakh JPS 1985.
24Moses went out and reported the words of the Lord to the people. He gathered seventy of the people’s elders and stationed them around the Tent. 25Then the Lord came down in a cloud and spoke to him; He drew upon the spirit that was on him and put it upon the seventy elders. And when the spirit rested upon them, they spoke in ecstasy, but did not continue.
26Two men, one named Eldad and the other Medad, had remained in camp; yet the spirit rested upon them—they were among those recorded, but they had not gone out to the Tent—and they spoke in ecstasy in the camp. 27A youth ran out and told Moses, saying, “Eldad and Medad are acting the prophet in the camp!” 28And Joshua son of Nun, Moses’ attendant from his youth, spoke up and said, “My lord Moses, restrain them!” 29But Moses said to him, “Are you wrought up on my account? Would that all the Lord’s people were prophets, that the Lord put His spirit upon them!” 30Moses then reentered the camp together with the elders of Israel. Numbers 11/24-30 Tanakh JPS 1985.
G-d tells Moses “I will draw upon the spirit that is on you and put it upon them; they shall share the burden of the people with you, and you shall not bear it alone.” G-d then “drew upon the spirit that was on him and put it upon the seventy elders. And when the spirit rested upon them, they spoke in ecstasy, but did not continue.”
And Moses said of the two elders who were acting the prophet in the camp speaking in ecstasy as the spirit rested on them “Would that all the Lord’s people were prophets, that the Lord put His spirit upon them!”
The spirit that was drawn from Moses and put upon the seventy elders is not the spirit that was born in Moses and was Moses. The same spirit that is in all men.
What was drawn from Moses was the spirit of G-d and the spirit of G-d is a person. The first person created by G-d.
The seventy elders had become temporary hosts of the L-rd of Hosts who is in the person of His spirit as My Name was in the angel who went before the Israelites in the exodus.
When each heard the angelic voice of the spirit of G-d speak to them (within them or without them) they became very excited and were saying all kinds of different things depending on what the person of the spirit of G-d was saying to them.
The important part for Moses is that each of the seventy would now in one accord have the idea and thought, as though it was their own thought and not spoken to them by G-d’s spirit or G-d, that they would share the burden of the people with Moses.
There is no account of G-d or His spirit commanding the seventy elders to share the burden of the people with Moses.
G-d can control the thoughts of a host.
I am the man described in Isaiah 11 as the twig of the stump of Jesse upon whom the spirit of G-d and the person of the spirit of the Holy G-d alighted upon many years ago. And he and G-d have taught me and shown me how they can control the thoughts of a host.