"The stone the builders rejected has become the cornerstone" is a famous biblical phrase from Psalm 118:22, signifying that what was discarded as worthless by human leaders is used by God to become the most important foundation.

"The stone the builders rejected has become the cornerstone" is a famous biblical phrase from Psalm 118:22, signifying that what was discarded as worthless by human leaders is used by God to become the most important foundation. In Christian theology, this refers to Jesus Christ being rejected by religious leaders but becoming the foundation of salvation.