In the Letter from Birmingham City Jail, Martin Luther King Jr. uses these three persuasive elements (Ethos, Logos, Pathos) to reach the goal of argumentative writing, which is to persuade the audience that your ideas are valid, or more valid than someone else 's. The first appeal that uses ethos in the greeting of the letter, which reads 'My Dear Fellow Clergymen. ' This illustrates that Dr. King is letting the reader understand him in his role of a religious leader. This is known to be a position in which the individual is seen as generally good, upright, truthful and trustworthy. The point is that Dr. King was ethos to remind the reader about his role as a religious leader, rather than another role that would have been equally valid.