Exodus 24:8

5 And he sent some of the young men of the children of Israel to make burned offerings and peace-offerings of oxen to the Lord.

6 And Moses took half the blood and put it in basins; draining out half of the blood over the altar.

7 And he took the book of the agreement, reading it in the hearing of the people: and they said, Everything which the Lord has said we will do, and we will keep his laws.

8 Then Moses took the blood and let it come on the people, and said, This blood is the sign of the agreement which the Lord has made with you in these words.

9 Then Moses and Aaron, Nadab, and Abihu, and seventy of the chiefs of Israel went up:

10 And they saw the God of Israel; and under his feet there was, as it seemed, a jewelled floor, clear as the heavens.

11 And he put not his hand on the chiefs of the children of Israel: they saw God, and took food and drink.