How do we know Christ was the rock mentioned in Exodus?

The identification of Christ as the rock referenced in Exodus 17 is directly affirmed in 1 Corinthians 10:4, which states, 'that rock was Christ.' This New Testament revelation illuminates the Old Testament narrative, showing that the rock Moses struck was a type of Christ, signifying His necessity as the smitten Savior. Through His sacrificial death, He provides spiritual sustenance and life for all who believe. Thus, the rock's smiting was not just an act of provision; it was a foreshadowing of the ultimate sacrifice that would bring eternal life to the people of God. This connection is foundational in understanding the continuity of God's redemptive plan from the Old to the New Testament.