The book of 2 Timothy is a Pastoral Epistle (letter from Paul to a church leader). The author is the Apostle Paul who wrote it approximately 67 A.D. and is probably his last letter. After Paul's release from his first imprisonment in Rome in AD 61 or 62, and after his final missionary journey (probably into Spain), he was again imprisoned under Emperor Nero c. 66-67. The key personalities are Paul, Timothy, Luke, Mark, and many others.
Its purpose was to give direction to Timothy and urge him to visit one final time. From the somber nature of this letter, it is apparent that Paul knew that his work was done and that his life was nearly at an end (4:6-8).