How do we know that Christ is the true cornerstone?

Scripture clearly establishes Jesus as the cornerstone of God’s redemptive work, stating, 'Behold, I lay in Zion for a foundation, a stone, a tried stone, a precious cornerstone' (Isaiah 28:16). This metaphor signifies that Christ is central to God's plan and the source of strength for all who dwell in Zion. Unlike the faulty foundations created by human effort, Jesus’ righteousness stands firm as the unwavering promise for believers, embodying hope and salvation that leads to eternal life.