Exodus 4
10 Ref And Moses said unto Jehovah, Oh, Lord, I am not eloquent, neither heretofore, nor since thou hast spoken unto thy servant; for I am slow of speech, and of a slow tongue.
11 Ref And Jehovah said unto him, Who hath made man's mouth? Or who maketh `a man' dumb, or deaf, or seeing, or blind? Is it not I, Jehovah?