How do we know Christ was represented by the rock in the wilderness?

The identification of the rock with Christ is made clear by Paul in 1 Corinthians 10:4, where he states, 'and that rock was Christ.' This declaration not only connects the Old Testament symbol with New Testament fulfillment but also highlights the continuity of God’s redemptive plan through scripture. The rock was a source of life and sustenance for the Israelites, just as Christ is the source of eternal life for believers. This typology underscores the essential truth that Christ is the fulfillment of all that is foreshadowed in the Old Testament.