This epistle contains evidence that Paul had recently heard news about current conditions in the Thessalonian church. Probably most of this information came to him from the person who had carried 1 Thessalonians to its recipients and had returned to Paul at Corinth. Perhaps other people who had news of the church had informed Paul, Silas, and Timothy also. Some of the news was good. The majority of the Thessalonians were continuing to grow and to remain faithful to Christ in spite of persecution. Unfortunately some of the news was bad. False teaching concerning the day of the Lord had entered the church and was causing confusion and leading some of the Christians to quit their jobs in expectation of the Lord's return.
In view of these reports Paul evidently felt constrained to write this epistle. He commended his children in the faith for their growth and faithfulness, corrected the doctrinal error about the day of the Lord, and warned the idle to get back to work.
Almost all conservative scholars believe that Paul wrote 2 Thessalonians from Corinth. The basis for this conclusion is that Paul, Silas, and Timothy were present together in Corinth (Acts 18:5). The New Testament does not refer to them being together from then on, though they may have been. Paul evidently wrote 1 Thessalonians from Corinth. The topics he treated in the second epistle seem to grow out of situations he alluded to in the first epistle. They reflect a very similar situation in the Thessalonian church. Corinth, therefore, seems the logical site of composition of 2 Thessalonians.
For these reasons it appears that Paul composed 2 Thessalonians quite soon after 1 Thessalonians, perhaps within 12 months.1This would place the date of composition in the early 50's A.D., perhaps 51 A.D., and would make this the third of Paul's canonical writings assuming Galatians was his first.
"The external evidence for the Pauline authorship of 2 Thessalonians is stronger than for 1 Thessalonians."2
