What does it mean to build your hope on the chief cornerstone?

To build your hope on the chief cornerstone is to place absolute trust in Jesus Christ as the means of salvation and the source of righteousness. As highlighted in the sermon, attempting to rely on one's own efforts or righteousness leads to instability and despair, as only Christ's sacrifice can secure our standing before God. This hope provides peace, stability, and assurance that we are eternally safe in the hands of our Savior, who is unmovable and the sure foundation laid by God, as affirmed in Isaiah 28:16.