Why is the cross of Christ central to a believer's rest?

The cross of Christ stands as the pivotal point for a believer's rest and assurance. Abraham's encouragement to 'rest yourselves under the tree' symbolizes the comfort found in the redemptive work of Christ. This tree, representative of the cross, speaks of the sacrifice Jesus made in bearing the weight of sin and judgment on behalf of His people. By resting in the finished work of Christ, believers are assured of their forgiveness and reconciliation with God. They can find true peace and comfort, knowing that their sins are covered and that they have been made faultless through His sacrifice. The cross not only offers rest from our toil and sin but also provides the foundation for spiritual nourishment through the gospel.