The stone which the builders rejected has become the head stone of the corner.
All Commentaries on Psalms 118:22 Go To Psalms 118
Augustine of Hippo
AD 430
16. But who is this whom we speak of? "The Stone which the builders rejected" (ver. 22); for "It hath become the head Stone of the corner" to "make in Himself of twain one new man, so making peace; and that He might reconcile both unto God in one body;" circumcision, to wit, and uncircumcision.