How do we know Christ is our Sabbath rest?

The scriptures confirm that Christ is our Sabbath rest through various passages. In Hebrews 4, we learn that just as God rested after creation, Jesus rested after achieving redemption for His people. His declaration 'It is finished' underscores that He completed the work required for our salvation. Furthermore, in Galatians 3, Paul teaches that the law served to point us to Christ, not to justify us, emphasizing that true righteousness and rest are found in Him alone, rather than in law-keeping.