Since 21 of the 27 New Testament book are letters comprising over 1/3 of all material, it is important to look at the concept of letters during this time period. Letters, the single best way to communicate, tended to follow a pattern of salutation, body, and conclusion. Many of the writers used trained scribes to actually do the writing; these scribes sometimes paraphrased what they had been told, which means it is hard to determine if a particular letter is by a particular author.
When you read one of these letters, keep in mind two things. First, remember you are getting only one side of an issue. You must figure out from the text or use available notes to see what the situation was. The author is responding to something, and you need to know what it is. Secondly, realize that the modern division into chapters and verses doesn’t always succeed in grouping related thoughts. Look for the major ideas rather than depending on chapter divisions. In fact, you will notice that some beginning verses are closely connected with the end of the previous chapter and need to be read together.
Paul is the most important of the New Testament letter writers. You can read about his life and dramatic conversion in Acts. He is credited with at least ten letters—1 and 2 Thessalonians, Galatians, 1 and 2 Corinthians, Romans, Colossians, Ephesians, Philippians, and Philemon. He may have written 1 and 2 Timothy and Titus; a few authorities think he wrote Hebrews. As you read his works, notice his great argumentative skills, his intellect, and his effective use of language. He combined Roman citizenship, Greek education, and Hebrew religion in his work. Keep in mind he was usually writing in response to a problem he had heard about; his job was to correct and discipline people in the church. Make sure you understand the reason for his letter.