What does the Bible say about the rock in Matthew 16:18?

In Matthew 16:18, when Jesus says, 'You are Peter, and on this rock I will build my church,' the 'rock' signifies the truth of Jesus being the Messiah, which Peter has just confessed. This interpretation aligns with the understanding that Christ, not fallible human beings, is the foundation upon which the Church is built. Peter's confession serves as the cornerstone of Christian faith, declaring Jesus as the 'Son of the living God.' Therefore, the emphasis should be on the truth of Christ's identity rather than on Peter's role alone.