Exodus 10:25

10:25 But Moses said, “Will you also provide us with sacrifices and burnt offerings that we may present them to the Lord our God?

Exodus 29:3-4

29:3 You are to put them in one basket and present them in the basket, along with the bull and the two rams.

29:4 “You are to present Aaron and his sons at the entrance of the tent of meeting. You are to wash them with water