Subscriptions are notices attached to Paul’s epistles that identify matters such as destination, writer, or circumstances of composition. They are not part of the original apostolic text, and some are plainly inaccurate.
Subscriptions are associated with the transmission and labeling of Paul’s letters rather than with the letters’ original apostolic wording.
In their present form, the subscriptions are attributed to Euthalius, a bishop of the fifth century. Their later origin explains why some contain incorrect information.