The earliest known reference to them is in
Jerome's
On Illustrious Men chapter 12, a work of around 392 CE: {{quote|Lucius Annaeus Seneca of Cordova, a disciple of the Stoic
Sotion, and paternal uncle of the poet
Lucan, was a man of very temperate life whom I would not place in a catalogue of saints, were it not that I was prompted to do so by those
Letters from Paul to Seneca and
from Seneca to Paul which are very widely read. In these, when Seneca was Nero's teacher and the most influential person of the period, he said that he wished to have the same position among his own [i.e., the pagans] which Paul had among the Christians. Two years before Peter and Paul were crowned with martyrdom, he was put to death by Nero.
Augustine of Hippo also briefly mentions the correspondence, as does
Pseudo-Linus. Paul's
Epistle to Philemon says he was imprisoned in Rome and that the Praetorian Guard knew of this; the Guard was at one point commanded by
Burrus, an ally of Seneca. Stoicism, much like
Hellenistic Judaism, was considered a precursor to Christianity that helped influence its stances and terminology; ('
conscience') was originally a Stoic term, for example, and Stoicism's criticisms of the (pagan) Roman religion was something Christians were eager to take for themselves as well. The Christian polemicist
Tertullian called Seneca "" ("often ours") and approved of his criticism of pagan superstition. The medieval authors
Peter of Cluny,
Peter Abelard, and
Petrarch all seem familiar with the correspondence. A few medieval writers such as
Giovanni Colonna and
Giovanni Boccaccio even claimed that Seneca had outright converted to Christianity before his suicide in 65 CE, partially on the basis of the correspondence. ==Scholarly analysis==