What does the Bible say about the cornerstone in relation to Christ?

In Scripture, Jesus Christ is metaphorically described as the cornerstone, a term that signifies His foundational role in the Church. Specifically, Ephesians 2:20 states that Christ is the chief cornerstone in whom the entire building is framed together, illustrating His importance in uniting believers and providing stability in their faith. This concept is rooted in Old Testament prophecies, notably in Psalm 118, where the stone the builders rejected becomes the chief cornerstone, thus fulfilling God's plan for redemption through Christ. This metaphor highlights not only Christ's strength and durability but also His ability to mediate between God and man, bringing reconciliation through His sacrifice.