How does the Old Testament relate to Jesus' sacrifice?

The Old Testament is rich with types and foreshadowings of Jesus Christ, who fulfills the law and the prophets. In passages like Genesis 3:15, the promise of a Redeemer is announced, indicating that the seed of the woman would crush the serpent's head, a clear reference to Christ's victory over sin and death. Moreover, the sacrificial system outlined in Leviticus serves to illustrate the necessity of a perfect sacrifice, which Jesus embodies as the Lamb of God who takes away the sins of the world (John 1:29). Through these narratives and prophecies, the Old Testament lays the foundation for understanding the significance of Christ's completed work on the cross.