How do we know that Christ is the true foundation for salvation?

Scripture testifies that Christ is the true foundation for salvation, as seen in Acts 4:12, which declares that 'neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.' This underscores the fact that no other foundation can support the believer's eternal security aside from Christ. He is the fulfillment of God’s redemptive plan, appointed as the cornerstone since the foundation of the world. Hence, any attempt to establish salvation on personal merit or works collapses, highlighting the necessity of relying on Jesus as the ultimate and exclusive source of salvation.