How do we know that Christ is our Sabbath rest?

In the sermon, it is emphasized that Christ’s role as the perfect advocate ensures that believers lack nothing in terms of righteousness before God. Hebrews 7:25 supports this, stating that Christ 'is able also to save them to the uttermost that come unto God by him'. This shows that our rest in Christ is rooted in His sufficient sacrifice and the righteousness He imparts to us. Therefore, knowing Christ as our Sabbath rest comes from understanding His completed work of salvation, freeing us from the need to fulfill the law ourselves.