De Profundis is an epistle.
=== Opening/ Greetings ===In contrast to modern letters, epistles usually named the author at the very beginning, followed by the recipient (for example, see Philippians 1:1)
 Epistle letters were also written to the dead, and, by the Ramesside Period, to the gods; the latter became even more widespread during the eras of Persian and Greek domination

