Verb
keep the Sabbath (third-person singular simple present keeps the Sabbath, present participle keeping the Sabbath, simple past and past participle kept the Sabbath)
(idiomatic) to maintain (the holiness or sanctity of) the Sabbath (by keeping it holy).
Some keep the Sabbath going to Church, I keep it staying at Home With a bobolink for a Chorister, And an Orchard, for a Dome. Emily Dickinson
I believe the Sabbath; I keep the Sabbath. John Harvey Kellogg
Keep the weekdays honest and it will be easy to keep the Sabbath holy. American Proverb