A.W. Pink has this to say:
"Had it been decreed that not a bone of Him should be broken? then the controlling hand of God which suffered the Roman soldiers to break the legs of the thieves (John 19:32), prevented them from doing the same with our Lord. Ah! there were not enough soldiers in all the Roman legions, there were not sufficient demons in all the hierarchies of Satan, to break one bone in the body of Christ. And why? Because the Almighty Sovereign had decreed that not a bone should be broken. Do we need to extend this paragraph any further? Does not the accurate and literal fulfilment of all that Scripture had predicted in connection with the Crucifixion, demonstrate beyond all controversy that an Almighty power was directing and superintending everything that was done on the Day of days? [The Sovereignty of God, Pink, 1959, 88]"
Exodus 12:46: "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. [ESV]"
Numbers 9:12: "They shall leave none of it until the morning, nor break any of its bones; according to all the statute for the Passover they shall keep it. [ESV]"
Psalm 34:20: "He keeps all his bones; not one of them is broken. [ESV]"
John 19:33-36: "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.' [ESV]"
He is truly the lamb of God, "who takes away the sin of the world! John 1:29 [ESV]"