What is the difference between Old Testament Sabbath and New Testament rest?

The Old Testament Sabbath was instituted as a physical day of rest, a shadow that pointed towards the deeper spiritual rest that would be realized in Christ. In the New Testament, this rest is described as the completion of salvation achieved through Jesus’ death and resurrection. It underscores that while the physical Sabbath served a purpose in the historical context of Israel, it ultimately foreshadowed the spiritual rest believers now possess through faith in Christ. Hebrews 4 contrasts the two, emphasizing that the spiritual rest is not about keeping a specific day but about resting in the finished work of Christ, which fulfills the law and provides true freedom and peace for the believer.