The Different Types of Pauline Epistles

Two thirds of the words in first Timothy, second Timothy and Titus aren't used by Paul in any of the other letters that are widely understood to be Pauline. And because these are written to individuals rather than communities, maybe Paul's style is changing. They seem concerned with issues that come from a later church environment. Things are more developed. We're concerned for the long term life of the church. It seems more likely these come from the late first century or the early second century.