And the chief priests took the silver pieces, and said, It is not lawful to put them into the treasury, because it is the price of blood.
All Commentaries on Matthew 27:6 Go To Matthew 27
John Chrysostom
AD 407
They did not make these decisions randomly but took counsel together. This indicates that no one is innocent of the deed. All are guilty. So it is in cases of conspiracy. The Gospel of Matthew, Homily