What does it mean to build on the rock according to Matthew 7?

In Matthew 7, Jesus illustrates two types of builders—one who builds on rock and one on sand. Building on the rock signifies faith in Christ and His transformative work. This foundation is unshakable, especially when trials and judgment come, as foretold in verses 24–27. Those who build their lives on the teachings of Christ and His redemptive work will endure and be secure. The metaphor illustrates the necessity of aligning one’s life with Christ's truths and trusting in Him for salvation rather than relying on self-righteousness or worldly philosophies.