There are thirteen Pauline Epistles which are believed to have been written by Paul though some critics claim that some were written by his followers (Matera, Frank 54). However, they are essential parts of the Bible that are studied up to date.
Why they might be pseudepigraphical.
The disputed/Deutero-Pauline Epistles might be pseudepigraphical because they were written by Paul followers. Half of the scholars assert that the Deutero-Pauline Epistles were written by Paul while other claims that they were written by a follower of Paul (Matera, Frank 59).
Why each was written
The letters were written as a continuation of the tradition. In the Biblical times, people did ...