The Three Letters of John

The letters from John were written between 85–95 AD. This seems to be the same John who was Jesus’ “beloved disciple”, who also wrote the Gospel of John and Revelation.

The first letter has two main themes: combating false teaching (apparently a form of Gnosticism), and assurance of salvation. The second letter is more personal and just briefly touches on the topic of Gnosticism, while the third is about a particular false teacher.

Resources:
http://bible.fether.net/index.php?book=23&pager=co
http://bible.fether.net/index.php?book=24&pager=co
http://bible.fether.net/index.php?book=25&pager=co