Ps 118:22

118:22 The stone that the builders rejected. The metaphor would likely refer originally to the king, who represented his people. The stone was cast off in despair when defeat seemed inevitable, and victory was no longer a realistic hope (but see following note).

the cornerstone. The low and insignificant, despite having been rejected, is exalted to the chief place. Jesus later applies this passage to Himself (Matt. 21:42; Mark 12:10; Luke 20:17; Acts 4:11 and 1 Pet. 2:7). Jesus is the cornerstone (Eph. 2:20), cast away by the earthly rulers of His day, but exalted to the right hand of the Father. To some this is a cause for stumbling (Is. 8:14; 1 Pet. 2), but to others the basis of hope.