Exodus 24:1-3

1Then God said to Moses, “Come up to the Lord, you and Aaron, Nadab and Abihu (Aaron’s older sons), and seventy of Israel’s elders, and you shall worship at a [safe] distance.

2Moses alone shall approach the Lord, but the others shall not come near, nor shall the people come up with him.”

3Then Moses came and told the people everything that the Lord had said and all the ordinances. And all the people answered with one voice, “Everything the Lord has said we will do.”