<P> According to some sources , Christians held corporate worship on Sunday in the 1st century . The earliest Biblical example of Christians meeting together on a Sunday for the purpose of `` breaking bread '' and preaching is cited in the New Testament book The Acts of the Apostles chapter 20 and verse 7 ( Acts 20 : 7 ) . 2nd - century writers such as Justin Martyr attest to the widespread practice of Sunday worship ( First Apology , chapter 67 ) , and by 361 AD it had become a mandated weekly occurrence . During the Middle Ages , Sunday worship became associated with Sabbatarian ( rest ) practices . Some Protestants today ( particularly those theologically descended from the Puritans ) regard Sunday as Christian Sabbath , a practice known as first - day Sabbatarianism . ( Some Christian groups hold that the term `` Lord 's Day '' can only properly refer to seventh - day Sabbath or Saturday . ) </P>
<P> According to some sources , Christians held corporate worship on Sunday in the 1st century . The earliest Biblical example of Christians meeting together on a Sunday for the purpose of `` breaking bread '' and preaching is cited in the New Testament book The Acts of the Apostles chapter 20 and verse 7 ( Acts 20 : 7 ) . 2nd - century writers such as Justin Martyr attest to the widespread practice of Sunday worship ( First Apology , chapter 67 ) , and by 361 AD it had become a mandated weekly occurrence . During the Middle Ages , Sunday worship became associated with Sabbatarian ( rest ) practices . Some Protestants today ( particularly those theologically descended from the Puritans ) regard Sunday as Christian Sabbath , a practice known as first - day Sabbatarianism . ( Some Christian groups hold that the term `` Lord 's Day '' can only properly refer to seventh - day Sabbath or Saturday . ) </P>
when did the church start worshipping on sunday
when did the church start worshipping on sunday
in the 1st century
in the 1st century