Exodus 4:9-11 New Life Version (NLV)
9 But they might not believe even these two things or listen to what you say. So then take some water from the Nile and pour it on the dry ground. And the water you take from the Nile will become blood on the dry ground.”
10 Moses said to the Lord, “Lord, I am not a man of words. I have never been. Even now since You spoke to Your servant, I still am not. For I am slow in talking and it is difficult for me to speak.” 11 Then the Lord said to him, “Who has made man’s mouth? Who makes a man not able to speak or hear? Who makes one blind or able to see? Is it not I, the Lord?