How do we know Christ is our Sabbath rest?

According to Colossians 2:16-17, all Sabbaths were shadows pointing to the rest found in Christ. He is the fulfillment of the law and the rest for God's people, having completed the work of salvation on the cross. When we rest in Him, we cease from our own efforts to earn righteousness and instead trust in His finished work. Just as the Israelites had to trust God for provision on the Sabbath, we are to rest in Christ, who provides for all our needs, both physically and spiritually. This understanding elevates our observance of the Sabbath from mere ritual to a transformative relationship with Christ, our true rest.