Exodus 4:10-12

ISV(i) 10 Then Moses told the LORD, “Please, LORD, I’m not eloquent. I never was in the past nor am I now since you spoke to your servant. In fact, I talk too slowly and I have a speech impediment.”
11 Then God asked him, “Who gives a person a mouth? Who makes him unable to speak, or deaf, or able to see, or blind, or lame? Is it not I, the LORD? 12 Now, go! I myself will help you with your speech, and I’ll teach you what you are to say.”