Sabbatarianism advocates the observation of the Sabbath in Christianity, in keeping with the Ten Commandments.
Sabbath Eve, painting by Alexander Johnston
Christian denominations teaching first-day Sabbatarianism, such as the Free Presbyterian Church of Ulster, observe the Lord's Day as a day of worship and rest
A monument of the Ten Commandments at the Texas State Capitol
Ethiopian Orthodox icon depicting St. George, the Crucifixion, as well as the Madonna and Child
Presbyterianism is a Reformed (Calvinist) Protestant tradition named for its form of church government by representative assemblies of elders. Though there are other Reformed churches that are structurally similar, the word Presbyterian is applied to churches that trace their roots to the Church of Scotland or to English Dissenter groups that formed during the English Civil War.
The Ordination of Elders in a Scottish Kirk, by John Henry Lorimer, 1891. National Gallery of Scotland.
Celtic cross draped for Easter at a Presbyterian church