Kairos is the moment that has arrived, the one worth naming, not just a slice of the clock.
Kairos covers the moment when something is due, ready, or fitting. It can be a season of the year, a stage in someone's life, a window that is open now and won't stay open, or the point at which a long-building situation finally comes to a head. Greek writers used it for the right moment to plant, to speak, to act, or to strike a deal.
What makes it hard to pin down in English is that kairos doesn't measure duration. It marks significance within time, not a stretch of it. A kairos can last a second or a decade. It's defined by what happens in it, not how long it runs. English has to guess, from context, whether the writer means a scheduled point, a fitting occasion, or a decisive turning.
“The time is fulfilled,” He said, “and the kingdom of God is near. Repent and believe in the gospel!”
Jesus announces that the moment has arrived, not merely that a clock has ticked forward.
For at just the right time, while we were still powerless, Christ died for the ungodly.
Paul says Christ died at exactly the fitting point, not a random one.
Let us not grow weary in well-doing, for in due time we will reap a harvest if we do not give up.
The harvest comes in its own due season, if the sowing isn't abandoned first.
redeeming the time, because the days are evil.
Believers are told to buy up the present opportunity, since it won't wait around.
English versions reach for "time," "season," "the right time," or "opportunity," depending on context, and none of them cover the word's full range on their own. "Time" flattens it into the clock sense kairos usually isn't pointing at. "Opportunity" catches the urgency but loses the sense of something arriving on its own schedule, not ours.
A popular word study claims kairos always means God's special, appointed time, sharply opposed to chronos, ordinary clock time. Greek usage doesn't support that clean split. Kairos regularly just means "a time" or "a season" with no theological weight attached, and chronos can carry plenty of significance too. The real contrast is duration versus fittingness, not sacred versus secular.
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