The Presbyterian Church
“There is no word, no hint in the New Testament about abstaining from work on Sunday. The observance of Ash Wednesday, or Lent, stands exactly on the same footing as the observance of Sunday. Into the rest of Sunday no Divine Law enters.” Canon Eyton, in “The Ten Commandments”
“We must not imagine that the coming of Christ has freed us from the authority of the law; for it is the eternal rule of a devout and holy life, and must therefore be as unchangeable as the justice of God, which it embraced, is constant and uniform.” John Calvin, Commentary on a Harmony of the Gospels, Vol. 1, pg. 277.
“The Sabbath is a part of the Decalogue – the Ten Commandments. This alone forever settles the question as to the perpetuity of the institution… Until, therefore, it can be shown that the whole moral law has been repealed, the Sabbath will stand… The teaching of Christ confirms the perpetuity of the Sabbath.” T.C. Blake, D.D., Theology Condensed, pp.474,475