14 Then the anger of the LORD burned against Moses, and He said, “Is there not your brother Aaron the Levite? I know that he speaks fluently. And moreover, behold, he is coming out to meet you; when he sees you, he will be glad in his heart. 15 “You are to speak to him and put the words in his mouth; and I, even I, will be with your mouth and his mouth, and I will teach you what you are to do. 16 “Moreover, he shall speak for you to the people; and he will be as a mouth for you and you will be as God to him. 17 “You shall take in your hand this staff, with which you shall perform the signs.”
18 Then Moses departed and returned to Jethro his father-in-law and said to him, “Please, let me go, that I may return to my brethren who are in Egypt, and see if they are still alive.” And Jethro said to Moses, “Go in peace.”19 Now the LORD said to Moses in Midian, “Go back to Egypt, for all the men who were seeking your life are dead.” 20 So Moses took his wife and his sons and mounted them on a donkey, and returned to the land of Egypt. Moses also took the staff of God in his hand.
When Moses was speaking God’s words, he would represent God Himself to the people, and Pharaoh. So much so, that God said “you will be as God to him.” It is a reminder when we are claiming to speak the words of God, how important that is. Not just for preachers, but for anyone that would say, “God told me…” Be careful, you are bearing the image of God when you do so, and He will not take it lightly if you are claiming falsely that you speak His words.