Concise Bible Dictionary:

A word often used in the Old Testament in opposition to those manifesting wickedness. It occurs only twice in the New Testament: as uttered by Judas in reference to the Lord, to whom it could be truthfully applied as “guiltless”; and by Pilate in reference to himself (Matt. 27:4,244Saying, I have sinned in that I have betrayed the innocent blood. And they said, What is that to us? see thou to that. (Matthew 27:4)
24When Pilate saw that he could prevail nothing, but that rather a tumult was made, he took water, and washed his hands before the multitude, saying, I am innocent of the blood of this just person: see ye to it. (Matthew 27:24)
). It was the true state of Adam and Eve before they fell. See HOLINESS.