12 But Moses said to the Lord, “Behold, the people of Israel have ^tnot listened to me. How then shall Pharaoh listen to me, for ^uI am of uncircumcised lips?”

18 And David said to Saul, ^z“Who am I, and who are my relatives, my father’s clan in Israel, that I should be son-in-law to the king?”

5 And I said: “Woe is me! ^yFor I am lost; ^zfor 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 ^aKing, the Lord of hosts!”

Isaiah’s Commission from the Lord

8 And I heard the voice of the Lord saying, “Whom shall I send, and who will go for ^cus?” Then I said, “Here I am! Send me.”

6 Then I said, “Ah, Lord God! Behold, ^lI do not know how to speak, ^mfor I am only a youth.”