so then, for that very reason: the weightiest Greek word for "therefore," used to bring an argument to its solemn conclusion
Toigaroun is the heaviest "therefore" in the Greek New Testament. It is built by stacking three older connecting words on top of one another: one that taps the hearer on the shoulder, meaning roughly "mind this, it concerns you"; one that grounds a claim in what has just been said; and one that draws the conclusion. The result is an earnest, weighty "and so." It always stands at the very front of its sentence, and it never turns up without a finished argument behind it.
The word belongs to polished, written Greek. It runs through the great playwrights, Plato, Xenophon, Demosthenes, and the ornate Jewish Greek of the Maccabean books, but it is essentially missing from the surviving everyday letters, receipts, and contracts of the ancient world. The ordinary Greek word for "therefore" (οὖν) does the daily work; toigaroun is what a writer reaches for when deliberately raising the level of the prose. That is why its two New Testament appearances fall where they do: in Hebrews, whose Greek is the most polished in the New Testament, and at one carefully staged moment in Paul.
Both times, it comes at the end of a sustained argument, where the writer stops building and delivers the verdict:
- In 1 Thessalonians 4:8 Paul caps a passage on sexual purity with a warning that carries full weight: to brush this teaching aside is to brush aside God, not a man.
- In Hebrews 12:1 it gathers up the whole roll call of faith from the previous chapter and turns it into a summons: since all those witnesses surround us, let us run the race with endurance.
The difference between the two is a difference of setting, not of definition. In each place it is the same solemn inference, announcing that the argument has arrived and asking the reader to feel the weight of where it landed.