The three epistles attributed to John are regarded as comming from the same community as the Gospel According to John, and to have been written shortly after John's Gospel. Thus the Second Epistle of John would have been written fairly early in the second century.
John Cave has written: 'An epistle to the inhabitants of Gillingham'
The First Epistle to the Corinthians and the Second Epistle to the Corinthians were written by the apostle Paul. The First Epistle of Peter and the Second Epistle of Peter are believed to have been written in Peter's name by anonymous authors, with the second book clearly a second-century work. Mark's Gospel was originally anonymous, but was attributed to Mark early in the second century. This attribution is not accepted by modern scholars. The Book of Hebrews has been attributed to Paul, but even the early Church Fathers realised that it was not an epistle he would have written. It remains anonymous. The Book of Revelation is signed by a person called John. The early Church Fathers disputed who this 'John' really was, and finally decided to include it in case the author was the apostle John. Modern scholars refer to its author simply as 'John of Patmos'.
The Second Epistle of Peter must have been written later than the Epistle of Jude, an early second-century book, as it incorporates almost all that epistle. The first mention of 2 Peter occurs in Origen's Commentary on John from the third century.Scholars have traditionally assigned a date from 124 to 150 CE to 2 Peter.
The book called the First Epistle of John (1 John) is believed to have been written shortly after the split in the Johannine community, which appears to have occurred early in the second century CE. The author is unknown.
We do not know the name of the author of the gospel now known as John's Gospel, since it was written anonymously and only attributed to the disciple John later in the second century. some believe the author of John's Gospel was also the author of the Epistle of John; certainly the Epistle of John came out of the same community as John's Gospel. If so, this author wrote both a gospel and an epistle in the New Testament.
The thirteen epistles that are almost certainly written by Paul, in order, are: Epistle to the Romans First Epistle to the Corinthians Second Epistle to the Corinthians Epistle to the Galatians Epistle to the Ephesians Epistle to the Philippians Epistle to the Colossians First Epistle to the Thessalonians Second Epistle to the Thessalonians First Epistle to Timothy Second Epistle to Timothy Epistle to Titus Epistle to Philemon although some theologians doubt that some letters (eg Ephesians) are written by him as the style of writing is different from the others. The fourteenth letter, the Epistle to the Hebrews - is unlikely to have been written by Paul. He doesn't claim to have written it nor is the style of writing his. Pauline authorship is rejected by modern scholarship and even in the early church its authorship was debated.
Answer: The Epistle or book of 1 John was written by John the Apostle.
Nicholas Amhurst has written: 'An epistle from the Princess Sobieski to the Chevalier de St. George' 'A congratulatory epistle to the Right Honourable Joseph Addison, Esq' 'An epistle (with a petition in it) to Sir John Blunt'
A:the Epistle to Titus was written in the name of the apostle Paul, but it is clearly a pseudo-Pauline epistle written during the second century and addresses concerns that had arisen then. Being pseudepigraphical, we do not know who really wrote the book.
John Jones has written: 'The Epistle of Paul to the Romans' -- subject(s): Accessible book, Commentaries, Bible
John Dodge has written: 'The first epistle of John' -- subject(s): Controversial literature, Christianity, Christianity and religious humanism, Deism
Scholars are almost unanimous that Paul did not write Second Timothy. The Second Epistle ot Timothy is one of the epistles called the 'Pastorals' and was written early in the second century by one of Paul's followers.Paul and Timothy were both dead long before this epistle was written.