In the New Covenant every Sunday (or “Lord’s Day”) is a holy day. Therefore, the Puritan church celebrates 52 “holidays” a year, (and sometimes even 53 [as in 2007], depending on how the calendar lays-out).
The New Covenant believers live from Lord’s Day to Lord’s Day. Every day of the week is *not* the same. Sundays are special—because on them the church celebrates both the historical bodily resurrection of Christ, and its own corporate spiritual resurrection in Christ.
Church becomes the center of the believers’ lives, and Sabbath (Sunday) worship is the crowing glory of the church’s service to God.
From this “mountain-top” experience, then, we re-enter our normal weekday (“valley”) worlds, better equipped and prepared to serve, order, and govern the realms into which God places us.