What does the Bible say about the church being built on Christ?

The Bible teaches that Jesus, in Matthew 16:18, states, 'Upon this rock I will build my church; and the gates of hell shall not prevail against it.' The rock refers to the foundational truth of Christ's identity as the Son of God. He is the cornerstone upon which the church is established, and this church represents His kingdom on earth. Throughout the New Testament, believers are reminded that Christ is essential for the growth and unity of the church, as seen in passages like Ephesians 2:19-22, where it describes the church as built upon the foundation of the apostles, with Christ as the chief cornerstone.