text: The opening verse of the salutation also names Timothy alongside Paul. This, however, does not mean that Timothy was the epistle's co-author. Rather, Paul regularly mentions others in the address if they have a particular connection with the recipient. In this case, Timothy may have encountered Philemon while accompanying Paul in his work in Ephesus.
  Occasion
  According to the most common interpretation, Paul wrote this letter on behalf of Onesimus, a runaway slave who had wronged his owner Philemon. The details of the offence are unstated, although it is often assumed that Onesimus had fled after stealing money, as Paul states in verse 18 that if Onesimus owes anything, Philemon should charge this to Paul's account. Sometime after leaving, Onesimus came into contact with Paul, although again the details are unclear. He may have been arrested and imprisoned alongside Paul. Alternatively, he may have previously heard Paul's name (as his owner was a Christian) and so travelled to him for help. After meeting Paul, Onesimus became a Christian believer. An affection grew between them, and Paul would have been glad to keep Onesimus with him. However, he considered it better to send him back to Philemon with an accompanying letter, which aimed to effect reconciliation between them as Christian brothers. The preservation of the letter suggests that Paul's request was granted.