Sacrifices were offered: After the Departure of Israel from Egypt

“The God of the Hebrews has met with us,” they answered. “Please let us go on a three-day journey into the wilderness to sacrifice to the LORD our God, or He may strike us with plagues or with the sword.”

“You are slackers!” Pharaoh replied. “Slackers! That is why you keep saying, ‘Let us go and sacrifice to the LORD.’

Then Moses’ father-in-law Jethro brought a burnt offering and sacrifices to God, and Aaron came with all the elders of Israel to eat bread with Moses’ father-in-law in the presence of God.

Then he sent out some young men of Israel, and they offered burnt offerings and sacrificed young bulls as peace offerings to the LORD.