Jeremiah 1:6

Then said I, Ah, Lord GOD! behold, I cannot speak: for I am a child.

The call to the prophetic office left Jeremiah with a deep sense of unworthiness and overwhelmed him with its magnitude. He responded that he was unable to speak for the task, because he was only a child. In his mind his youth rendered him incapable of fulfilling what was being asked of him. This shrinking response came even though he had been trained from childhood for holy service.