When God created Adam and Eve, He gave them a law for community relationships. Did He say, "All of My commandments you must keep—except for one"?
The Sabbath is not a minor ceremonial regulation that rarely affects man's relationship with God. It is one of the major Ten Commandments, the laws that spell out God's character, defining love and sin for us. This is why James explained that the law is a package (James 2:10); if you break one law, you break them all. Once the package is broken up, it loses its effectiveness.
The fourth commandment is especially important in keeping the other nine. In Ezekiel 20:7-8, 12-13, God specifies two specific commandments that Israel broke: the ones concerning idolatry and Sabbath-keeping. They are linked: If one does not keep the Sabbath, he will commit idolatry.
In one sense, these are the two key commandments around which all the others revolve. If we break the first one, we will certainly break the rest. If our god is not God, then we are off the track already. In the same way, if we break the Sabbath day, then the others will be broken. Without the Sabbath, contact with God is lost.
God has called a meeting of His Kingdom and Family to occur on that day. If we fail to attend, we are obviously absent and unable to benefit from it. For God to command something that we do not really have to keep would not be beneficial. It would be double-dealing, like handing someone a biscuit with one hand and taking it back with the other.
People observe the practices of their religion because they matter to them. Yet, we have been told that one can be a Christian without keeping this beneficial day. Some people claim that it does not matter. If, then, we can meet the requirements of being a Christian without keeping the Sabbath, a law that does not fit the flow of this world's social, business, and religious activities, then why keep it? That would not make sense.
What has happened? They have bought into the Protestant notion that God is only trying to save people, and that His law only defines sin. Such a belief has ramifications: The law will be seen in a totally negative light, rather than God's intended positive purpose. Law not only defines sin, but also provides a guide that will produce character in us identical to the Creator's, if we live by the power of His Spirit.
Our small part in this entire wonderful purpose is not merely to say, "I believe in Jesus Christ as my Savior," but it is to use our God-given free moral agency to make the right choices in order to do our small part in producing godly attitudes and character.