'Seventy' in the Bible

All the persons who came from the loins of Jacob were seventy in number, but Joseph was already in Egypt.

Then they came to Elim where there were twelve springs of water and seventy date palms, and they camped there beside the waters.

Then He said to Moses, “Come up to the Lord, you and Aaron, Nadab and Abihu and seventy of the elders of Israel, and you shall worship at a distance.

Then Moses went up with Aaron, Nadab and Abihu, and seventy of the elders of Israel,