 Although a few Christian denominations follow the Judaic practice of observing the Sabbath on Saturday , Catholics , along with most Christians , observe Sunday as a special day , which they call the " Lord 's Day " . This practice dates to the first century , arising from their belief that Jesus rose from the dead on the first day of the week . The Didache calls on Christians to come together on the Lord 's Day to break bread and give thanks . Tertullian is the first to mention Sunday rest : " We , however ( just as tradition has taught us ) , on the day of the Lord 's Resurrection ought to guard not only against kneeling , but every posture and office of solicitude , deferring even our businesses lest we give any place to the devil " ( " De orat . " , xxiii ; cf . " Ad nation . " , I , xiii ; " Apolog . " , xvi ) . 
 Although a few Christian denominations follow the Judaic practice of observing the Sabbath on Saturday , Catholics , along with most Christians , observe Sunday as a special day , which they call the " Lord <a href='null_genetive' title='1'><mark>'s</mark></a>Day " . This practice <a href='uninflect' title='2'><mark>dates</mark></a> to the first century , arising from their belief that Jesus rose from the dead on the first day of the week . The Didache <a href='uninflect' title='3'><mark>calls</mark></a> on Christians to come together on the Lord <a href='null_genetive' title='4'><mark>'s</mark></a>Day to break bread and give thanks . Tertullian is the first to mention Sunday rest : " We , however ( just as tradition <a href='been_done' title='5'><mark>has</mark></a> taught us ) , on the day of the Lord <a href='null_genetive' title='6'><mark>'s</mark></a>Resurrection ought to guard not only against kneeling , but every posture and office of solicitude , deferring even our businesses lest we give any place to the devil " ( " De orat . " , xxiii ; cf . " Ad nation . " , I , xiii ; " Apolog . " , xvi ) . 
Although a few Christian denominations follow the Judaic practice of observing the Sabbath on Saturday , Catholics , along wit most Christians , observe Sunday as a special day , which they call da " Lord  Day " . dis practice date to the first century , arising from their belief that Jesus rose from the dead on tdafirst day of the week . The Didache call on Christians to come together on thdaord  Day to break bread and give thanx . Tertullian is thedarst to mention Sunday rest : " We , however ( jus as tradition done taught us ) , on the day of the Lord  Resurrection ought to guard not only against kneeling , but every posture and office of solicitude , deferring even our businesses lest we give any place to the devil " ( " De orat . " , xxiii ; cf . " Ad nation . " , I , xiii ; " Apolog . " , xvi ) .