What do I mean by a sacred sense of time? . . . The Hebrews perceived two kinds of time—kairos and chronos. Chronos is ordinary, moment-to-moment (secular) time. But kairos is time that marks a crisis or a turning point in history. For the Jews, the Exodus was a kairos event because it marked the moment God decisively entered into their history, brought them up out of the land of Egypt, chose them as his people, and entered into a corporate covenant relationship with them. In Israel, chronos was given meaning by the kairos events. Festivals that celebrated and relived historically critical moments had the effect of lifting ordinary time into redemptive time. Thus, God’s people lived by a sacred year, which was rooted in what God had done for them.
-Robert Webber, Worship Is a Verb: Celebrating God’s Mighty Deeds of Salvation, Second Edition (Peabody, MA: Hendrickson Pub., 1996), 159-160.