Corner-stone
The Cornerstone in Ancient Construction
In ancient architecture, the cornerstone was one of the most important stones in a building. It could refer to either the large foundation stone laid at the corner of a structure, upon which the entire building's alignment depended, or the capstone at the top that locked the final tier of stones together. In either position, the cornerstone was the key stone, the one that gave the structure its stability and integrity.
Among the Canaanites who preceded Israel in Palestine, the laying of a cornerstone was a sacred and sometimes horrifying ceremony. Archaeological evidence has revealed that bodies of children were sometimes placed beneath cornerstones of temples and other significant buildings as a form of human sacrifice to consecrate the structure. This practice was among the hideous rites that Israel was commanded to abolish, and it may shed light on the curse Joshua pronounced upon anyone who would rebuild Jericho (Joshua 6:26).
Old Testament References
The cornerstone appears in several significant Old Testament passages, each using the image to convey stability, importance, and divine purpose. In Job 38:6, God asks Job, "Who laid its cornerstone?" when describing the foundations of the earth, using the image to express the stability of God's creation.
Isaiah 28:16 contains one of the most theologically significant cornerstone passages: "Behold, I am laying in Zion a stone, a tested stone, a precious cornerstone, a sure foundation: whoever believes will not be in haste." This prophetic declaration establishes the cornerstone as a symbol of God's reliable work, something trustworthy that can bear the full weight of his people's faith.
Psalm 118:22 introduces a striking twist: "The stone that the builders rejected has become the cornerstone." This paradoxical statement, likely reflecting an ancient tradition about a stone that was discarded during the temple's construction only to prove essential, became one of the most quoted Old Testament verses in the New Testament.
Zechariah 10:4 uses the cornerstone to represent the coming ruler in the Messianic age, while Zechariah 4:7 envisions the capstone being set in place with shouts of "Grace, grace to it!"
Jesus Christ as the Cornerstone
The New Testament applies the cornerstone imagery directly and emphatically to Jesus Christ. Psalm 118:22, the verse about the rejected stone becoming the cornerstone, is quoted or referenced more frequently than almost any other Old Testament text. Jesus himself quoted it after telling the parable of the wicked tenants (Matthew 21:42; Mark 12:10; Luke 20:17), applying the image to himself as the one rejected by Israel's leaders but chosen by God as the foundation of his kingdom.
Peter proclaimed the same truth before the Sanhedrin: "This Jesus is the stone that was rejected by you, the builders, which has become the cornerstone" (Acts 4:11). In his first epistle, Peter wove together Isaiah 28:16 and Psalm 118:22, presenting Christ as both the precious cornerstone for believers and the stone of stumbling for those who reject him (1 Peter 2:6-8).
Paul similarly built on this foundation, declaring that the church is "built on the foundation of the apostles and prophets, Christ Jesus himself being the cornerstone" (Ephesians 2:20). In Romans 9:33, Paul combined Isaiah 28:16 with Isaiah 8:14 to show that the same stone is a foundation of faith for some and a cause of stumbling for others.
The Cornerstone and the Church
The image of Christ as cornerstone carries profound implications for the nature of the church. Just as an ancient building derived its alignment and stability from its cornerstone, the church derives its identity, direction, and structural integrity from Christ. Without the cornerstone, the building cannot stand; without Christ, the church has no foundation.
Ephesians 2:20-22 develops this image fully, describing the church as a holy temple in which Christ is the cornerstone, the apostles and prophets are the foundation, and all believers are living stones being fitted together into a dwelling place for God through the Spirit. Peter echoes this same vision in 1 Peter 2:4-5, calling believers "living stones" being built into a spiritual house.
The Rejected Stone
The paradox of the rejected stone becoming the cornerstone is central to the gospel message. The very one whom the religious leaders of Israel cast aside proved to be the indispensable foundation of God's redemptive plan. This pattern of rejection and exaltation runs throughout the story of Christ: despised by those in authority, crucified as a criminal, yet raised by God to the highest place and established as the cornerstone of a new humanity.
Biblical Context
The cornerstone image appears in Job 38:6, Isaiah 28:16, Psalm 118:22, and Zechariah 4:7 and 10:4 in the Old Testament. In the New Testament, it is applied to Christ in Matthew 21:42, Mark 12:10, Luke 20:17, Acts 4:11, Romans 9:33, Ephesians 2:20, and 1 Peter 2:6-7. The image connects the prophetic writings, the Gospels, the book of Acts, and the epistles, making it one of the most consistently applied Messianic types in Scripture.
Theological Significance
The cornerstone image teaches that Jesus Christ is the essential foundation of God's redemptive work. His rejection by human leaders and exaltation by God reveals the pattern of the gospel itself: what humans discard, God establishes as his chosen instrument. The cornerstone also defines the church, which is built upon Christ and derives its unity, stability, and purpose from him. The dual nature of the cornerstone as both a sure foundation for believers and a stone of stumbling for the unbelieving reflects the divisive nature of the gospel.
Historical Background
In ancient Near Eastern construction, cornerstones were carefully selected, tested, and placed with ceremony. Canaanite practices included foundation deposits and even human sacrifice beneath cornerstones. The rabbinic tradition recognized the cornerstone passages as Messianic. Archaeological evidence from temples and palaces across the ancient world confirms the structural importance of corner and foundation stones. The Romans also practiced elaborate cornerstone-laying ceremonies for significant public buildings.