Why is Christ our Sabbath rest?

In the context of spiritual rest, Christ is identified as our Sabbath because He offers true rest from the works of the law and the burdens of self-righteousness. Hebrews 4:9 emphasizes that there remains a rest for the people of God, which is fulfilled in Christ. When believers cease from their own works, they enter into His completed work, recognizing that salvation comes not from human effort but from faith in the finished work of Christ. This understanding shifts the focus from a day of rest to a Person, emphasizing that spiritual rest is found entirely in Christ alone.