How does the Old Testament relate to New Testament grace?

Throughout the Old Testament, we see types and shadows that point to the ultimate grace revealed in Jesus Christ. The story of Naaman's healing is a prime example, showcasing God's grace extended even to a Gentile. In the New Testament, grace is fully manifested through Christ's sacrificial death and resurrection, offering salvation to all who believe. Hebrews 10:1 describes the sacrifices of the Old Covenant as merely a shadow of the good things to come, solidifying the concept that God's grace has always been available, culminating in Christ's redemption.