They bore false witness against him at his trial. They continualoy changed their testimony, and even suborned perjury to get him out of the way.
Yes, our salvation was the result, but it was murder all the same. If it had been any less, Satan would not have been interested. As it was, he filled Judas' heart to betray Jesus, and he certainly filled the heart of the high priest who issued warrants to Saul of Tarsus to murder Christians.
In the blood of Christ by the grace of God
In the grace of God by the blood of Christ