God calls Jeremiah to be a prophet to the nations despite Jeremiah's protests that he is too young and does not know how to speak. God reassures Jeremiah that He will give him the words to say and that God will be with Jeremiah to protect him. God then touches Jeremiah's mouth and fills it with His words. God appoints Jeremiah to uproot and tear down nations, as well as to build and plant, assigning Jeremiah a significant task despite Jeremiah's perceived inadequacies.