Holy Week begins with Jesus making an surprising entry and ends with an amazing exit. And rocks play an important part in both. On the way in Jesus tells the shushing Pharisees that even if his followers are silenced the rocks will cry out. Then at the tomb, it is a rock that introduces them to the resurrection: the stone is rolled away!
So while it appears that the rocks are the stars, let us never forget: Jesus is the stone that the builders rejected.