Exodus 3:9-12 (NKJV)
Now therefore, behold, the cry of the children of Israel has come to Me, and I have also seen the oppression with which the Egyptians oppress them. 10 Come now, therefore, and I will send you to Pharaoh that you may bring My people, the children of Israel, out of Egypt.” 11 But Moses said to God, “Who am I that I should go to Pharaoh, and that I should bring the children of Israel out of Egypt?” 12 So He said, “I will certainly be with you. And this shall be a sign to you that I have sent you: When you have brought the people out of Egypt, you shall serve God on this mountain.”