David Wilkerson emphasizes God's unwavering promise to those He has called, using the example of the prophet Jeremiah who, despite facing persecution and suffering, remained steadfast in his divine mission. God reassures Jeremiah that He has equipped him with the words to speak and the strength to endure, urging him not to fear men or failure. This message extends to all Christians, reminding them that they are not alone in their struggles and that God has placed His hand upon them, empowering them to fulfill their purpose. Wilkerson encourages believers to rise in faith, knowing that God is their protector and source of strength amidst adversity.