How do we know Christ is Lord of the Sabbath?

In Matthew 12, Jesus asserts His authority by healing a man on the Sabbath, establishing that His actions are in alignment with the true spirit of the law. He rebukes the Pharisees for their legalism, showing them that their interpretation of the Sabbath was distorted by their lack of compassion. When Jesus declares Himself as the Lord of the Sabbath, He reveals that He has the power to do good on this day, embodying the true meaning of rest and restoration, which is found in Him. This proclamation highlights His divinity and His role in fulfilling the law.