Numbers 11:24
So Moses went out, and he spoke the words of Yahweh to the people, and he gathered [together] seventy men from the elders of the people, and he {made them stand} all around the tent.
Numbers 11:16
And Yahweh said to Moses, "Gather for me seventy men from the elders of Israel whom you know [are] elders of the people and their officials; take them to the tent of assembly, and they will stand there with you.
Numbers 11:26
But two men were left in the camp; the name of one [was] Eldad, and the name of the second [was] Medad, and the spirit rested on them; they were among those who were written [down], but they did not go out to the tent, so they prophesied in the camp.