Exodus 18:12

18:12 Then Jethro, Moses’ father-in-law, brought a burnt offering and sacrifices for God, and Aaron and all the elders of Israel came to eat food with the father-in-law of Moses before God.

Exodus 20:24

20:24 ‘You must make for me an altar made of earth, and you will sacrifice on it your burnt offerings and your peace offerings, your sheep and your cattle. In every place where I cause my name to be honored I will come to you and I will bless you.