Why are the Epistles useful sources for learning about Paul's experience

AnswersIn general terms, Paul's epistles are known as Pauline epistles to distinguish them from the epistles known as the Epistles of James, John, Jude and Peter. Inwritten by Paul (1 Thessalonians, Galatians, 1 Corinthians, 2 Corinthians, more specific usage, the epistles believed to really have been Philippians, Philemon and Romans) ...