Exodus 3:11-12

11But Moses said to God, “1Who am I, that I should go to Pharaoh, and that I should bring the sons of Israel out of Egypt?” 12And He said, “Certainly 2I will be with you, and this shall be the sign to you that it is I who have sent you: 3when you have brought the people out of Egypt, 4you shall 5worship God at this mountain.”