security: the state of being safe and impossible to overthrow, whether shut up so firmly nothing can break in or simply out of harm's reach
This is the down-to-earth side of the word. At its root it pictures something that cannot be tripped or knocked over, so it names the condition of being held fast and kept from danger. The New Testament uses it in two related shades. One is the security of a place locked and guarded, sealed so tightly that nothing should be able to get in or out. The other is the wider sense of safety, the feeling of being beyond the reach of any threat.
Both shades share a single core: a state that seems unbreakable. What is striking is how the New Testament writers use it. Again and again they set up this human security only to show it collapse. A prison is locked in full security, and the apostles walk free. The world announces peace and safety, and sudden ruin arrives. The word becomes a quiet piece of dramatic irony: the firmest human security is exactly what God overturns.
Nuances
The source and background of the doublet "peace and security" (eirene kai asphaleia) in 1 Thess 5:3, and thus its rhetorical target. The lexical sense (objective political safety) is agreed; the debate is over what cultural discourse Paul is invoking and subverting.
- majorityThe phrase echoes and inverts Roman imperial propaganda of peace and security (pax et securitas). Paul quotes the empire's own promise of safety in order to unmask it as illusory before the Day of the Lord. This became the dominant Anglophone reading.; K. P. Donfried, 'The Cults of Thessalonica and the Thessalonian Correspondence,' NTS 31 (1985): 336-356; H. Koester, 'Imperial Ideology and Paul's Eschatology in 1 Thessalonians,' in Paul and Empire, ed. R. Horsley (1997), 158-166; J. A. D. Weima, 'Peace and Security (1 Thess 5:3): Prophetic Warning or Political Propaganda?' NTS 58 (2012): 331-359; 1-2 Thessalonians (BECNT, 2014)
- minorityThere was no fixed Roman peace-and-security slogan. No Latin formula pax et securitas is attested, and Roman Securitas propaganda takes off only late in Nero's reign, roughly fifteen years after the letter, so Paul more likely coined his own pairing from available civic and imperial language.; J. R. White, 'Peace and Security (1 Thess 5:3): Is It Really a Roman Slogan?' NTS 59 (2013): 382-395; NTS 60 (2014): 499-510; M. Konradt, Gericht und Gemeinde (BZNW 117, 2003), 145-146
- minorityThe phrase echoes the Old Testament oracles against false prophets who cry "peace, peace" when there is no peace, so the security named is the complacency of those who ignore coming judgment.; F. F. Bruce, 1 and 2 Thessalonians (WBC 45, 1982), 110; C. A. Wanamaker, The Epistles to the Thessalonians (NIGTC, 1990), 180