'Speech' in the Bible

Then Moses said to the Lord, “Please, Lord, I have never been eloquent, neither recently nor in time past, nor since You have spoken to Your servant; for I am slow of speech and slow of tongue.”

But Moses spoke before the Lord, saying, “Behold, the sons of Israel have not listened to me; how then will Pharaoh listen to me, for I am unskilled in speech?”

But Moses said before the Lord, “Behold, I am unskilled in speech; how then will Pharaoh listen to me?”