“When Jesus had called the Twelve together, he gave them power and authority to drive out all demons and to cure diseases, and he sent them out to proclaim the kingdom of God and to heal the sick," Luke 9:1-2. Believers have the authority to heal the sick. Whenever God gives a command, it is the equivalent of an oath. It would be unjust for God to give you a command you cannot carry out. Jesus spoke to situations and you must follow his example.