How do we know that Christ is present in the Old Testament?

The presence of Christ in the Old Testament is affirmed through the fulfillment of various prophecies and typological representations. For instance, Genesis 3:15 contains the first prophecy about Christ, foretelling a savior who would ultimately defeat Satan. Furthermore, the story of Adam and Eve demonstrates the need for a perfect sacrifice, prefiguring Christ as the Lamb slain from the foundation of the world (Revelation 13:8). Christ's role as Creator and as the ultimate Passover Lamb makes clear His foundational significance. The New Testament writers often cite the Old Testament, reinforcing the continuity of Christ’s mission and identity throughout Scripture (Luke 24:44).