[h=3]Heb. 4:9 says that a Sabbath-rest still remains for believers today.[/h]
Hebrews 4 is talking about a future rest. People did not have this rest in Joshua’s day, nor when Psalm 95 was written (v. 8), so this chapter is not talking about the weekly Sabbath. This rest is entered by faith in Christ (v. 2). By using the word "Sabbath-rest," Hebrews is saying that the weekly Sabbath symbolized the real rest that God wants his people to enter. Just as the Levitical sacrifices symbolized the work of Christ, the weekly Sabbath pictured our final salvation. This symbolism says nothing about whether Christians should continue observing the symbols.In one way, symbols are obsolete, but in another way, they are still required. Circumcision is a great example. Christians do not have to be physically circumcised (Rom. 2:29)—but we should be circumcised in the heart. We are to keep this ritual law, but we do so in the spirit, not the letter. In one sense, Christ has made the law obsolete; in another way, he has transformed it and still requires it in its transformed way. The same is true of the Levitical rituals: although we do not offer animal sacrifices, we are obedient to those laws when we have faith that Jesus Christ fulfilled those sacrifices. The requirement has been transformed.
In a similar way, since the Sabbath points toward our final salvation, and this salvation is in Christ, we are abiding by the purpose of the Sabbath command when we put our faith in Christ. It is in him that we find the rest that we need (Matt. 11:28-30). The requirement for rest has been transformed to focus on Christ rather than a day of the week. If we have faith in him, we are entering God’s rest and we are therefore keeping the spiritual intent of the Sabbath.