"The controversy that has turned on the question as to whether or not, in the Christian dispensation, the Sabbath is the first day of the week or the seventh, and as to whether we can be said to observe the fourth commandment when we substitute the first day of the week for the seventh, has too often been allowed to obscure the central principle, namely, that every recurring seventh day was by divine ordination distinguished from every other day. The difficulty that may be encountered in determining which day of the week is the Sabbath should never be used as a subterfuge to escape from the central and straightforward import of the commandment, that every recurring seventh day is specifically holy to God. At the cost of repetitiousness, may we say, that the principle should never be perplexed or prejudices by the further question: which day in the succession of days should be accorded that distinction? We may not minimize the importance of this latter question. But we must not allow the difficulties that may attend this question to unsettle what is antecedent and even more central, the obligation, so far as the fourth commandment is concerned, to recognize the divine distinctiveness of every recurring seventh day" (John Murray)

Keep ALL God's Commandments including the 4th which nowhere in the Word or Law of God is annulled. GOD nor Christ has annulled the Sabbath. Obey the Lord!