Exodus 24:5-6

24:5 He sent young Israelite men, and they offered burnt offerings and sacrificed young bulls for peace offerings to the Lord. 24:6 Moses took half of the blood and put it in bowls, and half of the blood he splashed on the altar.

Exodus 24:8-11

24:8 So Moses took the blood and splashed it on the people and said, “This is the blood of the covenant that the Lord has made with you in accordance with all these words.”

24:9 Moses and Aaron, Nadab and Abihu, and the seventy elders of Israel went up, 24:10 and they saw the God of Israel. Under his feet there was something like a pavement made of sapphire, clear like the sky itself. 24:11 But he did not lay a hand on the leaders of the Israelites, so they saw God, and they ate and they drank.