Epistles to the Corinthians
There are two Epistles to the Corinthians in the New Testament: First Epistle to the Corinthians Second Epistle to the Corinthians There is also a Third Epistle to the Corinthians, once considered canonical by the Armenian Apostolic Church, but now almost universally believed to be pseudepigraphical.
Source: Wikipedia — Epistles to the Corinthians (CC BY-SA 4.0)