Jeremiah 1:4-7

Now the word of Jehovah came unto me, saying, Before I formed thee in the belly I knew thee, and before thou camest forth out of the womb I sanctified thee; I have appointed thee a prophet unto the nations. Then said I, Ah, Lord Jehovah! behold, I know not how to speak; for I am a child. But Jehovah said unto me, Say not, I am a child; for to whomsoever I shall send thee thou shalt go, and whatsoever I shall command thee thou shalt speak.