Why is Christ called the cornerstone in the Bible?

The designation of Christ as the cornerstone signifies His foundational role in both salvation and the life of the Church. In 1 Peter 2:6, it states that Jesus is the chosen and precious cornerstone, the one upon whom all spiritual stability rests. This imagery, rooted in Old Testament prophecy (Isaiah 28:16), conveys the truth that all believers are built up as a spiritual house on this solid foundation. By resting fully on Christ, we are assured that we will never be put to shame or confounded, as He provides the unshakeable refuge necessary for our spiritual lives.