John 19:31-34; 1 John 5:6

31 Since it was the day of Preparation, in order to prevent the bodies from remaining 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.

32 So the soldiers came and broke the legs of the first, and of the other who had been crucified with him;

33 but when they came to Jesus and saw that he was already dead, they did not break his legs.

34 But one of the soldiers pierced his side with a spear, and at once there came out blood and water.

6 This is he who came by water and blood, Jesus Christ, not with the water only but with the water and the blood.