II Corinthians
The Second Letter of Paul to the Corinthians was composed from Macedonia in around 55 CE. The letter, which might have been composed after a genuine visit by Paul to Corinth, alludes to a disturbance among the Christians there, throughout which Paul had been offended and his missional authority tested. As a result of this occurrence, Paul settled not to go to Corinth again face to face. All things being equal, he obviously composed an interceding letter (2:3-4; 7:8, 12), presently lost, in which he told the Corinthians of his pain and disappointment. Apparently, he sent an individual laborer, St. Titus, to convey the letter to the local area at Corinth. In the subsequent letter, Paul communicates his happiness at the news, just got from Titus, that the Corinthians had atoned, that his (Paul's) position among them had been reaffirmed, and that the miscreant had been rebuffed. In the wake of communicating his satisfaction and help, Paul asks the Corinthians to answer liberally to his request for commitments to help the poor of Jerusalem.
The last four parts of the letter, a sharp and vivacious safeguard of Paul's biblical power, contrast notably in tone from the prior sections, recommending that parts 10-13 might have been composed before, before Paul had accepted Titus' message. A few researchers view these sections as a lost piece of one more letter to the Corinthians, consequently supporting the hypothesis about the deficiency of some interceding correspondence.