Exodus 18:12

12And Jethro, Mosesfather-in-law, brought a burnt offering and sacrifices to God; and Aaron came with all the elders of Israel to eat bread with Mosesfather-in-law a  before God.

Leviticus 17:5

5This is to the end that the people of Israel may bring their sacrifices that they sacrifice b  in the open field, that they may bring them to the  Lord, to the priest at the entrance of the tent of meeting, and sacrifice them c  as sacrifices of peace offerings to the  Lord.
Copyright information for ESV