What does the Bible say about Jesus being the rock?

In Scripture, Jesus is often depicted as the Rock, illustrating His reliability and strength as the foundation for believers. For example, in Matthew 16:18, Jesus declares, 'Upon this rock I will build my church.' This underscores that our spiritual lives and salvation are established upon Christ, who is both unchanging and eternal. As expressed in Deuteronomy 32:4, He is described as the perfect Rock, whose work and judgments are just. In contrast to the unstable foundations of the world, Christ remains a steadfast anchor for our faith.