In all probability I Thessalonians is the earliest of Paul’s letters, particularly because the memory of the events that led to the founding of that congregation are still fresh in the mind of the Apostle. The letter was written from Corinth. According to I Thessalonians, chapter 3, verse 2, Paul had sent Timothy to Thessalonica from Athens during his brief stay there, had just experienced the delegate’s return, and had received reports about the congregation to which he is reacting in this letter. I Thessalonians gives expression to Paul’s surprise over the rapid growth of the Christian mission at Thessalonica, which was achieved despite immediate persecutions from pagan contemporaries. Paul acknowledged that the successful development had been wrought in the Thessalonians by their own acceptance, fully recognizing the human frailty of the Apostle, their founder (2:1–12), and not by a mistaken understanding that he himself was divine.

Paul’s surprise results, therefore, in overwhelming gratitude, and the customary Pauline thanksgivings here exceed the usual limits. A second reason for this unusually long thanksgiving—which actually makes thanksgiving the theme of the letter—is Paul’s intent to undergird the encouragement he gives in 4:13–5:11. After having dwelt so extensively on his being moved by the change in the Thessalonians, Paul continues to state that therefore they have no reason for giving up faith in the face of the death of some fellow Christians, who had died between their conversion and the expected imminent Parousia of Christ. Apparently, they had expected the Parousia and final salvation as the promise of the Christian message. Paul encouraged his congregation that he had a “word of the Lord” that the dead and the living in Christ will rise together. “Word of the Lord” could refer to a word of Jesus known to Paul but could instead be a direct revelation to Paul.

In chapter 5 there is further thanksgiving, emphasizing the present gift and power of Christian faith and corporate Christian life. This emphasis is linked with ethical applications, with stress on brotherhood, diligence in keeping the faith, and religious industriousness. The difficulties of balancing the expectation of the Christian with God’s timetable is outweighed by the hope and joy in what has already been experienced and what is hoped for. Paul’s real emphasis is more on the actual description of Christian life in the face of coming salvation and vindication than on the preceding discussion of the fate of those who had died or on the actual circumstances of Christ’s appearance from heaven.

The encouragement of the Thessalonians was introduced in chapter 4 by a genuinely ethical exhortation to proceed properly on the way to holiness and sanctification already begun. The brevity of this rather traditional exhortation is most unusual in Paul’s letters and supports the observation that it was written in joy and confidence for a new congregation well begun in order to support it against attacks and doubts as it matured in the faith.

The Second Letter of Paul to the Thessalonians

A feature of II Thessalonians that resembles the otherwise most unusual feature of I Thessalonians is its excessively long thanksgiving. Within this thanksgiving there is an excursus dealing with the timing of the Parousia, but in II Thessalonians Paul aggressively argues against any expectation of an imminent coming of Christ that might be expected from the things he wrote in I Thessalonians. II Thessalonians perhaps presupposes I Thessalonians and intimates that believers had a false understanding of that communication of Paul. In II Thessalonians, much to the surprise of the reader of both letters, the statement is made that a letter “purporting to be from us” is “to the effect that the day of the Lord has come.” II Thessalonians then presents a problem as to whether it was a self-correction of Paul or directed to the situation of a later time and thus the writing of a later author in a “Pauline” tradition. II Thessalonians does have more apocalyptically catastrophic language than I Thessalonians. Such a description not only underestimates the positive work of God and Christ for the believer but also says little about the Parousia. II Thessalonians claims that not all the events preceding the Parousia have yet occurred. The “mystery of lawlessness,” opposed to the “mystery of godliness,” is still at work in the world, and the full activity of Satan has not yet unfolded itself. Emphasis in II Thessalonians is on steadfastness as God’s gift and promise in the days of tribulation, which makes the apostle ask for support in prayer. Criticism of people leading disorderly and idle lives follows. The perhaps casual admonition to work is thus elaborated into a major point.

Salvation seems to be sought almost exclusively in futuristic terms. Incipient or actual Gnosticism in the church could account both for the assertion that the fulfillment has already come and for the depiction of disorderly lives (because in “proto-Gnostic” terms the world is evil and provokes a response either of total renunciation or libertinism). II Thessalonians may thus reflect these problems and fit into the late 1st century. Verbal agreements between the two letters may be evidence of deliberate spurious writing, as also the suggestion in II Thessalonians that false letters may be circulating. A later author saw Paul’s heritage threatened by too enthusiastic an understanding of Paul in Thessalonians and composed this letter to preserve Paul’s meaning.