For these things were done, that the scripture should be fulfilled, A bone of him shall not be broken.

People's New Testament

19:36 That the scripture should be fulfilled. See Ex 12:46.

Wesley's Notes

19:36 A bone of it shall not be broken - This was originally spoken of the paschal lamb, an eminent type of Christ. Exod 12:46.

Jamieson-Fausset-Brown Bible Commentary

36. that the scripture should be fulfilled, A bone of him shall not be broken-The reference is to the paschal lamb, as to which this ordinance was stringent (Ex 12:46; Nu 9:12. Compare 1Co 5:7). But though we are to see here the fulfilment of a very definite typical ordinance, we shall, on searching deeper, see in it a remarkable divine interposition to protect the sacred body of Christ from the last indignity after He had finished the work given Him to do. Every imaginable indignity had been permitted before that, up to the moment of His death. But no sooner is that over than an Unseen hand is found to have provided against the clubs of the rude soldiers coming in contact with that temple of the Godhead. Very different from such violence was that spear-thrust, for which not only doubting Thomas would thank the soldier, but intelligent believers in every age, to whom the certainty of their Lord's death and resurrection is the life of their whole Christianity.

Matthew Henry's Concise Commentary

19:31-37 A trial was made whether Jesus was dead. He died in less time than persons crucified commonly did. It showed that he had laid down his life of himself. The spear broke up the very fountains of life; no human body could survive such a wound. But its being so solemnly attested, shows there was something peculiar in it. The blood and water that flowed out, signified those two great benefits which all believers partake of through Christ, justification and sanctification; blood for atonement, water for purification. They both flow from the pierced side of our Redeemer. To Christ crucified we owe merit for our justification, and Spirit and grace for our sanctification. Let this silence the fears of weak Christians, and encourage their hopes; there came both water and blood out of Jesus' pierced side, both to justify and sanctify them. The Scripture was fulfilled, in Pilate's not allowing his legs to be broken, Ps 34:20. There was a type of this in the paschal lamb, Ex 12:46. May we ever look to Him, whom, by our sins, we have ignorantly and heedlessly pierced, nay, sometimes against convictions and mercies; and who shed from his wounded side both water and blood, that we might be justified and sanctified in his name.