Why is the law of Christ's kingdom different from the Mosaic law?

The law of Christ's kingdom represents a significant shift from the external commands of the Mosaic law, which was given to reveal human sinfulness. In contrast, the law of the Spirit, which is internalized in the hearts of believers, brings freedom from condemnation and empowers them to live righteously. As stated in Romans 8:2, this new law leads believers to rest from their own works, embodying the fulfillment of the law in Christ. This perspective is crucial for understanding Christian identity and living within the framework of grace rather than legalism.