Zechariah 10:4 promises that from Judah will come the "cornerstone." In ancient construction, the cornerstone was the most critical piece of the foundation, determining the alignment and stability of the entire building.
Jesus identified Himself as the stone the builders rejected, which had become the cornerstone (Matthew 21:42). The New Testament writers confirm that the "Temple" is no longer made of physical stones, but of people built upon Christ (Ephesians 2:20). He is the anchor of the New Creation, the one stone that cannot be moved, even when the old world fell in AD 70.