The letters to the Thessalonians are, according to the introductory notes in my NIV study bible sometimes labelled "the eschatological letters", which implies that there's going to be loads of info about the End of Days and the Apocalypse. While there's certainly more of that than in Paul's other letters so far, there's not really a huge amount to go on. Since they ted to cover a lot of the same ground, I'm going to treat them in parallel, and abbreviate them as 1Thess and 2Thess for convenience so it's clear which letter is which when I reference them.
Paul opens each letter, as seems to be his custom, with comment on the situation of the church to which he's writing. Paul seems to like the Thessalonians and believes that they in fact set a good example for many others in the region, and it seems that news about the church in Thessalonica has spread throughout the area. He makes a specific reference to their converting from Paganism rather than Judaism. In Acts, the church is described as being formed by "Some of the Jews ... as did a large number of God-fearing Greeks and not a few prominent women." (Acts 17:4) In 1 Thessalonians, Paul mentions that the people of the church there "turned to God from idols to serve the living and true God, and to wait for his Son from heaven, whom he raised from the dead - Jesus, who rescues us from the coming wrath." This point also includes the letter's first reference to the theme of the Second Coming and the End of Days.
Paul also seems to have a recurring theme of wanting to go back and visit the churches he writes to. With Thessalonians, it's because (according to Acts, anyway) he had to leave suddenly after a mob was whipped up by those Jews who were opposed to his teaching. He observes that the Thessalonian church has suffered prejudice against them, and he even equates that to the oppression in Judea of the Christian church. In this passage, particularly (2:15), we can see the possibility of how Christian anti-Semitism in the 2nd Millennium CE may have originated from Biblical writings, "[the Jews], who killed the Lord Jesus and the prophets and also drove us out. They displease God and are hostile to all men" - it's not pretty reading. If it's true what was written in Acts about the way Paul was treated in Thessalonica by some members of the Jewish contingent, maybe he was speaking in anger rather than love at that point, but to me it is completely out of character with his references to Judaism in several of the other letters (Romans, Ephesians, Galatians, etc). Given that in Acts it appears that several of the Christians in Thessalonica had converted from Judaism, it also seems uncharacteristically out of touch with his audience. I am sorely tempted to take this verse as evidence of a later copyist's editorialising, but since I set out on this project to write as if the Letters truly are Paul's work, I should deal with it as it is. It is also tempting to say that Paul is writing only about the Jews who drove him away from Thessalonica, and no any other Jews, but sadly the context implies pretty strongly that he's talking about Jews in general (by the relation of the phrase to his comments about the churches in Judea). This is a very awkward passage for people who would like to claim Christianity is an accepting religion and not anti-Semitic.
Still on the topic of Paul's wish to see the church in Thessalonica again, he says that he was worried that the pressures from the surrounding community and from "the tempter" (i.e. Satan) might have caused the Thessalonian Christians to turn back to their old practices. However, he continues, he has heard that they have remained steadfast in their new faith. 2 Thessalonians echoes this theme in its opening passage (2Thess 1:3-4)
The other element of this introduction in 1Thess (which has taken up all of chapters 1-3!) is that at 2:1-12 he writes of what it is to be a minister of God, and emphasises the selflessness of the preacher. The preacher should remember always his mission is not self aggrandisement but the Word of God; the preacher should be self-supporting as far as possible, and should treat his parishioners as "a father deals with his own children, encouraging, comforting and urging you" (2:11-12). Interestingly, Paul also uses the imagery of himself as a mother to the Thessalonian church as well: "we were gentle among you, like a mother caring for her little children" (2:7). This brings the rather wonderful thought to my mind that perhaps priests in the modern Church could be termed "Mother" instead of "Father", based on Scripture evidence!
In chapter 4, Paul turns to another favourite theme: reminding people how to behave properly. And he starts with a familiar theme within that: sexual (im)morality. For the first time we see a practical test of what sexual immorality might be:
1 Thessalonians 4:3-8 It is God's will that you should be sanctified: that you should avoid sexual immorality; that each of you should learn to control his own body in a way that is holy and honourable, not in passionate lust like the heathen, who do not know God; and that in this matter no one should wrong his brother or take advantage of him. The Lord will punish men for all such sins, as we have already told you and warned you. For God did not call us to be impure, but to live a holy life. Therefore, he who rejects this instruction does not reject man but God, who gives you his Holy Spirit.
On feminist themes, verses 4-5 (control his own body, not give in to "passionate lust") are a clear injunction that it is not the victim who has to be careful, but the rapist who is at fault for not controlling himself. Verse 6 ("no one should wrong his brother or take advantage of him") is the true test of an ethical sexuality, in my mind. Don't cheat on a partner, don't "take advantage of" a partner, which carries all sorts of lessons concerning the boundaries of consent (although Paul's meaning seems more to be to do with men's actions towards other men's wives). Still, 1 Thessalonians 4:3-8 marks the strongest and clearest definition so far of the importance of free, full, informed consent when it comes to sexual matters. And again, Paul has not defined sexual immorality by sexual acts but by the relations of those engaging in sex.
Paul continues on to state themes also familiar from his other letters: "Make it your ambition to lead a quiet life, to mind your own business and to work with your hands, just as we told you, so that your daily life may win the respect of outsiders and so that you will not be dependent on anybody."
In his closing remarks in both letters he returns to this theme, emphasising respect for hard workers (which seems to refer more specifically to the church elders in Thessalonica), rejecting idleness, helping the weak, and remaining patient with one another, and there are some hints that some of the Thessalonians, believing that the End was already upon them, had given up their jobs. Paul warns them to keep working right up to the final Day of Judgement. 2Thess 3:10 is a verse that deserves some specific attention: "For even when we were with you, we gave you this rule: "If a man will not work, he shall not eat." In past times, and sometimes even in modern times, this sentiment has been used as a stick with which to beat the poor and unemployed - people are poor because they are lazy; the unemployed are undeserving of support because they do not work. But the translation says "will not". It is neither "cannot" nor "has no"; it is "will". Are there those whose will is against doing work? Probably. But it is always false to claim in modern society that the only reason people are unemployed is because they are too lazy to work. I, and I believe most others who are unemployed, WANT to be put to work, I want a job. But right now, nobody will pay me to work. Modern society is not like the economy of 2,000 years ago! So, while an unquestioning or unthinking approach might see Paul's comment here as an indictment of the unemployed, in fact it is more likely to be an indictment of modern economics!
And now at last we get to the good bit: the discussion of the End of Days!
This is where most of 2Thess is covered.
1Thess talks first about the dead being resurrected at the Lord's coming; in 2Thess this event is described as Christ coming, but in 2Thess this is accompanied with the punishment of those who "do not know God". 1Thess talks about how believers "will be caught up together with them in the clouds to meet the Lord in the air. And so we will be with the Lord for ever." This to me harks back (or forwards, since 1 Thessalonians is probably the earliest of Paul's letters) to the point in Philippians about "transform[ing] our lowly bodies so that they will be like his glorious body".
In 1Thess 5:1-3 Paul warns that "the day of the Lord will come like a thief in the night" and without warning. "While people are saying, "Peace and safety", destrction will come on them suddenly, as labour pains on a pregnant woman, and they will not escape." This echoes the Old Testament prophets who often used labour pains as a symbol to describe the suffering of their people during apocalyptic times.
Paul suggests, however, that Christians, being "sons of the light and sons of the day" should be able to see it coming through being "alert and self-controlled". Faith, love and hope of salvation shall be like armour to protect the believer (a common simile in Paul's letters. Faith, hope and love are commonly linked in htis way throughout Paul's letters, most famously in 1 Corinthians ("Faith, hope and love. And the greatest of these is love.")
2Thess is more detailed about the way the Day of Judgement will come. As mentioned, it talks of Jesus coming and punishing those who "do not know God" and "do not obey the gospel of our Lord Jesus". If I am sceptical about one or two passages in 1Thess, then I am even more sceptical of 2Thess as a whole, because this passage reads to me much more like later theological doctrine than anything I see elsewhere in Paul, and there are one or two other points that make me doubt it. However, again, I am taking an approach to treat all of this as Paul's work and see where it leads. It should be noted, though, that the introductory notes on 2Thess also comment on some academics pointing out a number of inconsistencies between 2Thess and Paul's other writings. There are ways to talk around those difficulties and explain them away, so we shall continue regardless. The footnotes make it clear that the term "know" is used in the sense of "acknowledge" - that is, the passage refers specifically to those who have heard the Word of God but rejected it, rather than to those who have not heard it - this echoes partly the theme about the Law bringing sin to light rather than preventing sin that is covered in Romans 3:20 - "no one will be declared righteous in his sight by observing the law; rather, through the law, we become conscious of sin". The point here is that it is not those who are ignorant of God who will be punished, but those who have heard and rejected Him.
In 2Thess Paul talks about "the man of lawlessness", an Antichrist figure of some kind. This "man of lawlessness" will be accompanied by a rebellion as he is revealed, and will "oppse and will exalt himself over everythingthat is called God or is worshipped, so that he sets himself up in God's temple, proclaiming himself to be God." He is, apparently, being "held back" by something or someone (a masculine identifier is used in verse 7 for this restraining force or person) and will finally be revealed, only for Christ to destroy him when He returns in glory. This Antichrist figure will not be Satan, but will "be in accordance with the work of Satan". Again echoing Old Testament language, Paul writes:
2 Thessalonians 2:9-12 The coming of the lawless one will be in accordance with the work of Satan displayed in all kinds of counterfeit miracles, signs and wonders, and in every sort of evil that deceives those who are perishing. They perish because they refused to love the truth and so be saved. For this reason God sends them a powerful delusion so that they will believe the lie and so that all will be condemned who have not believed the truth but have delighted in wickedness.
It all seems a little bit redundant, since God presumably knows who will believe and who will be deceived, without going through all this palaver, and it's implicit in that passage that He does (since he specifically sends the delusion to them and not to believers)! But humanity has been given free will. It seems that only in this, if anything, can God have doubt, so perhaps in the end there will be some who are
not deceived by the powerful delusions? Christians, though, should be protected from such delusions by their faith and the Holy Spirit (2Thess 2:13).
The final theme in common between the two letters is a warning to be wary of false prophets. In 2Thess this is specifically about warnings of the end of days: "we ask you, brothers, not to become easily unsettled or alarmed by some prophecy, report or letter supposed to have come from us, saying that the day of the Lord has already come." (2Thess 2:1-2)
In 1Thess it is more general, and it seems that the scepticism I bring to Bible is here endorsed by Paul: "Do not put out the Spirit's fire; do not treat prophecies with contempt. test everything. Hold on to the good. Avoid every kind of evil." (1Thess 5:19-22) Paul advises people not to take anything purely on trust but to test it against the Spirit and our understanding of good and evil through the Spirit.
Paul finishes 1Thess with a reminder of God's grace and finishes with the injunction, "Greet all the brothers with a holy kiss." (5:26)
2Thess finishes with a reminder that when someone chooses a path away from God's Word, that they should not be treated as an enemy but reminded as a brother or friend of the perils of their choices. The suggested medium is to shun that person ("Do not associate with him, in order that he may feel ashamed") but if one is treat as a brother not an enemy, then that cannot be a complete or absolute rejection even so. It seems certain to me that the anger and wrath that some "Christians" display is in direct disobedience of this (and similar) teaching of Paul's.
A final note, several of Paul's letters seem to have been dictated by him, but he writes a few sentences in his own handwriting at the end. In 2Thess, he explains this practice but I can't help but feel like it's either redundant or else it's a forgery: "I, Paul, write this greeting in my own hand, which is the distinguishing mark in all my letters." If, as is suggested in the introductory notes, this letter is one of the earliest (since it was written not many months after 1Thess, which is thought to be the earliest) then how would this be the mark of "all my letters"? It sounds like something that might have been added by a later theologian rather than something Paul himself might have written. I am a sceptic in general, and to me there are elements that make me very wary of taking 2Thess as being genuine. I discussed it here as if it is, but I want to make my doubts known.
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Next up, the Pastoral Letters, in which Paul is writing to his fellow preachers of the Word.