How does the rejected cornerstone in the legend relate to Christ?
The rejected cornerstone in the legend symbolizes Christ, the chief cornerstone and head of the corner. Though the builders failed to recognize Him and cast Him aside, He was the stone meant to hold all things together, the rock of salvation whom people encounter.
Les explains that the legend is not in Scripture but illustrates Peter's Old Testament analogy. Christ was to be the chief cornerstone and head of the corner. In Solomon's temple, stones were pre-cut so no hammer or chisel was heard at the site. The chief cornerstone was brought early, but the builders did not recognize it and dumped it in a vacant lot, where weeds grew around it. That stone was meant to hold the architecture together—like the top stone of an arch—which is what Christ was to have been. Instead, the builders cast it aside, and people passing through the lot would bump into it.