Yes, the Christian is to keep the Sabbath. The book of Hebrews shows us the proper Sabbath is one the Jews never observed. The lesson of the Sabbath is more than setting aside one specific day of the week to worship God. It is daily, faithfully, worshiping God in love. The lesson of the Sabbath is to be at rest and peace because we trust and love God. “And we know that God causes everything to work together for the good of those who love God and are called according to his purpose for them.” Romans 8:28 NLT

By practicing the spirit of the Sabbath, Christians learn to keep the Sabbath rest better than if only setting aside the seventh day to attend church and cease from work. “Whoever wants to be my disciple must deny themselves and take up their cross daily and follow me.” Luke 9:23 NIV   If Christians faithfully “follow him”; they “enter into rest.” “Let us therefore fear, lest, a promise being left us of entering into his rest (sabbath) any of your should seem to come short of it…for we which have believed do enter into rest…” Hebrews 4:1,3

Additionally, we are under grace, the Abrahamic Promise and the Law of Love. “Let no man therefore judge you… in respect of any holy day…or of the Sabbath…” Colossians 2:16,17 NLT. Christians are developed under God’s promise or Covenant He made with Abraham, Isaac and Jacob found in Genesis 26:1-5. Galatians 3:29 teaches when we accept Christ as our Savior, we become part of the Abrahamic seed and are heirs to God’s promises, “And if ye be Christ’s, then are ye Abraham’s seed, and heirs according to the promise.”

The Law given to the Hebrews was to teach righteous living. “What then is the law? It was added (to the Covenant made with Abraham) because of (Israel’s) transgressions, till the seed (Jesus) should come to whom the promise hath been made.” Galatians 3:19 ASV “He (Jesus) canceled the record of the charges against us (the Jewish people) and took it (The Mosaic Law) away by nailing it to the cross.” Colossians 2:14 NLT “For Christ is the end of the law, that everyone who has faith may be justified.” Romans 10:4 NLT Jesus was able to do what no one else could do: Jesus kept the Law perfectly and did not sin against it.  He is the savior of the world. “Look, the Lamb of God, who takes away the sin of the world!” John 1:29 NIV

When the Jewish leaders asked Jesus what the greatest commandment was, he answered by introducing the spirit of the law which replaced the letter of the Law after Jesus offered himself as the perfect sacrifice. “…You shall love the LORD your God with all your heart, with all your soul, with all your mind, and with all your strength. This is the first commandment. And the second, like it, is this: You shall love your neighbor as yourself…” Mark 12:29-34 NKJV 

This incorporates the lesson of the Sabbath: Trusting and loving God and our neighbors brings us daily rest.

Additional Resources:
Christian Questions Podcast 
Episode #1127: “What Does the Sabbath Look Like for Christians?”
Discovering what the Sabbath really means for Christians
Preview Video 
CQ Rewind Show Notes

Sermon: (Audio only) “The Rest of the Story,” Allen Springer 
(Video) Video Version