Innocent Blood

Matthew 27:3-4 ESV

3 Then when Judas, his betrayer, saw that Jesus was condemned, he changed his mind and brought back the thirty pieces of silver to the chief priests and the elders, 4 saying, “I have sinned by betraying innocent blood. ” They said, “What is that to us? See to it yourself. ” 

KJV

 4  Saying, I have 
  sinned[ aina G264 ἁμαρτάνω * hamartanō * ham-ar-tan'-o * Perhaps from G1 (as a negative particle) and the base of G3313; properly to miss the mark (and so not share in the prize), that is, (figuratively) to err, especially (morally) to sin: - for your faults, offend, sin, trespass. [LEX] [Find] ] in that I have betrayed the innocent 
  blood.[ an,nn G129 αἷμα * aima * hah'ee-mah * Of uncertain derivation; blood, literally (of men or animals), figuratively (the juice of grapes) or specifically (the atoning blood of Christ); by implication bloodshed, also kindred: - blood.

How tightly entwined are the ideas of blood and wine, so much so that Jesus lifted His cup and said drink of my blood poured out for you. 

Innocent blood was spilled. The chief priests and elders did not care. "What is that to us?"