And Moses spoke before LORD, saying, Behold, the sons of Israel have not hearkened to me, how then shall Pharaoh hear me, who am of uncircumcised lips?
And Moses said to LORD, Oh, LORD, I am not eloquent, neither heretofore, nor since thou have spoken to thy servant, for I am slow of speech, and of a slow tongue.
Then I said, Woe is me! For I am undone, because I am a man of unclean lips, and I dwell in the midst of a people of unclean lips. For my eyes have seen the King, LORD of hosts.