It shall be eaten in one house; you shall not take any of the flesh outside the house, and you shall not break any of its bones. (Exodus 12:46 ESV)
He keeps all his bones; not one of them is broken. (Psalm 34:20 ESV)
Since it was the day of Preparation, and so that the bodies would not remain on the cross on the Sabbath (for that Sabbath was a high day), the Jews asked Pilate that their legs might be broken and that they might be taken away. So the soldiers came and broke the legs of the first, and of the other who had been crucified with him. But when they came to Jesus and saw that he was already dead, they did not break his legs. But one of the soldiers pierced his side with a spear, and at once there came out blood and water. He who saw it has borne witness—his testimony is true, and he knows that he is telling the truth—that you also may believe. For these things took place that the Scripture might be fulfilled: “Not one of his bones will be broken.” And again another Scripture says, “They will look on him whom they have pierced.” (John 19:31-37 ESV)
Moses and David each prophesied that the Messiah would die without having any bones broken. Both were correct, as John's Gospel points out. Jesus died before the soldiers began breaking the accused's legs.
Not only were his bones unbroken, but his power was unbroken as well. His sovereignty went unbroken. Even as they pierced his side Jesus held all authority.
They killed Jesus. They bloodied him. But they never broke him. And no one ever will.