“Jesus ties His parable of wicked farmers killing the son to this Scripture about the builders rejecting the cornerstone. The Son is the stone. Not only had they read it, this was one of the Psalms they all sang every year at Passover – the feast they’re celebrate that very week. For centuries they had been repeating these words. Now here’s Jesus saying, “You’re the rejecters and I am the cornerstone.”
This was controversial, not only because it condemns the leaders, but Jews thought that the stone being rejected was the nation of Israel and that the builders were the other nations of the world.
But now Jesus reveals that He is the cornerstone. Which means that He is the new temple. It is a broadside against the Levitical system, which was coming to an end. The veil would be torn so that all of us could have access to the Father and be blessed by His generosity and grace.“