Exodus 4:10
Moses said to the LORD, "O Lord, I have never been eloquent, neither in the past nor since you have spoken to your servant. I am slow of speech and tongue."
Second one is somewhere in my brain floating around. I can't seem to remember.
i guess i knwo one of them... were studying him in Ancient History at the moment and that woudl be Moses when he speaks to the Lord for the first time...