Both theThe piercing of Christ side and the flow of blood and water (John 19:34) are unique to John’s gospel and it’s clear from the testimony which follows it (19 19:35) hethe author sees in them great deal ofa real significance.
Three times he swears to these events. (1) “He who has seen has borne witness” (2) “and his witness is true” (3) “and he knows that he is telling the truth…” (John 19:35)
His summary, “so that you also may believe,” foreshadows the very purpose of his gospel, as summarized in John 20:31. “But these have been written that you may believe that Jesus is the Christ…”
So striking is this testimony it has been called, “the most solemn protestation of accuracy to be found in the whole work.” No whereNowhere does John make a more passionate and personal claim.
What essential significance does John perceive in the piercing of Christ's side and the flow of blood and water?