Charles Ellicott Commentary Numbers 11:24

"And Moses went out, and told the people the words of Jehovah: and he gathered seventy men of the elders of the people, and set them round about the Tent." — Numbers 11:24 (ASV)

And Moses went out ... — that is, it seems, from the tabernacle of the congregation, where he had been conversing with God.

Round about the tabernacle.— This does not necessarily imply that the seventy men were placed so that they surrounded the whole of the tent of meeting. Compare to Exodus 7:24, where the word means on both sides of the river; also Job 29:5, where the same word is rendered about.