http://ngcc.ca/wp-content/uploads/2017/05/Two-Very-Different-Cornerstones.mp3

Peter and John used the healing of the lame beggar to validate the gospel message. In so doing, Peter referenced Old Testament scripture that employed the concept of a cornerstone as a metaphor. He accused the Jewish leaders as builders who had rejected Christ as their cornerstone. Peter contrasts the builders, the buildings and the cornerstones used by the Sadducees and by God