In
              conclusion I would like to briefly repeat the clear scriptural
              proofs which make it absolutely certain that the Sabbath must be
              kept today. First of all it is commanded in the law of God (Exodus
              20:8-11). Second of all Jesus Christ said that we are to observe
              even the least of the commandments of the law of God in the New
              Covenant just as in the Old (Matthew 5:17-20). It is sure that the
              Sabbath commandment was not a least commandment but was written by
              the finger of God Himself and was a day sanctified long before the
              Ten Commandments were given (Genesis 2:4). Given that Christ is
              our more perfect sacrifice, circumcision, feast day, and
              ceremonial Sabbaths of rest (Leviticus 23) we now observe these
              particular things in a superior way and are no longer under the
              wall of partition and the commandments contained in ordinances but
              we obey these particular things in a new and more fulfilled way
              (Ephesians 2:11-18, Colossians 2:13-17, Romans 14, Matthew 5:17).
              We also know that we do not observe the entire law of Moses for
              salvation (Acts 15:1) which is by faith alone, but rather we
              observe it for sanctification as the evidential mark of being
              God’s spiritual people (Matthew 5:17-20, 1 John 5:3, Romans
              3:31, Matthew 7:21-23, Romans 12:9-21, Rev 22:15, Rev 22:14, Rev
              14:12).
              
As
              stated earlier, the Sabbath is one of these commandments of God
              that mark the saints. It is called by God in the Old Testament
              “My Holy Day” or the “Lord’s Day” (Isaiah 58:13). On
              this day God’s pleasure was to be done only. In other words it
              is the day that belongs to the Lord (Isaiah 58:13-14). The Sabbath
              was to be a day of holy convocation (gathering together), worship,
              reading of the law, and rest (Isaiah 66:23, Exodus 20:8-11). The
              fact that John is observing this “Lord’s day” in Revelation
              is proof that this day is continuing to be observed (Revelation
              1:10) by the church. In addition this is demonstrated to be the
              first day of the week in the new covenant by evidence that the
              apostles are gathering together to break bread with Jesus or with
              the Holy Spirit (ie with God) over consecutive Sundays and
              worshipping (John 20:19-26, Acts 2:1, Acts 20:7, 1 Corinthians
              16:1-2). In addition Christ states that the Sabbath is made for
              mankind, not simply for ethnic Jews (Mk 2:27). Christ tells us
              specific things that can and cannot be done on the Sabbath like
              healing/charity (Mt 12:11-12). Finally the scriptures tell us that
              we are commanded to meet together (Hebrews 10:25). All of this
              combined is proof that it is a perpetual and moral obligation to
              observe one day in seven (the first day of the week) as the
              Sabbath day.