How do we know that Christ is the foundation of our faith?

The foundation of the Christian faith is explicitly affirmed in Matthew 16:18, where Jesus proclaims that He will build His church upon Himself, the rock. Additionally, 1 Peter 2:5 refers to Christians as 'lively stones' being built into a spiritual house with Christ as the chief cornerstone. This reinforces the idea that all believers are united under Christ, who is the source of life and stability in our faith. Our belief rests firmly on the assurance that Christ Himself, as God in flesh, is the ultimate builder of the church.