Glait on the Sabbath

For whosoever shall keep the whole law,
and yet offend in one point,
he is guilty of all.
James 2:10

"Oswald Glait, about 1529, became the first (of the Reformation) to point out that the true Sabbath was the "seventh" day. 

Glait pointed out that the moral law of the Decalogue was as binding on Christians under the new covenant as it had been in the Old. "Either the Sabbath must be kept," he argued, "or all the other nine commandments must also be rejected."
*He maintained that the ceremonial law was the shadow that passed away, but God's moral law stands firm. 

*"Sunday," he said, "is the pope's invention," 

*and the abrogation of the Sabbath is none other than "the devil's work." 

Originally a follower of Balthasar Hubmaier, in 1527 in the Nikolsburg dispute he sided with the pacifist position of Hans Hut. He then appears in Silesia, along with Andreas Fischer, as a leader of an Anabaptist group there. 

He penned a booklet, Vom Sabbat, advocating the (re)institution of Saturday/Sabbath keeping as a Christian practice, thus restoring what Glait argued had been the original practice of the Apostolic church of the New Testament. 

Glait was arrested and imprisoned in Vienna in 1545, then taken out at night and drowned in autumn 1546."

 BAT/wikipedia