Caiaphas was a high priest so he was suppose to
have the gift of prophecy. The decendants of
Aaron received supernatural revelation.

When Caiaphas spoke it was accepted as prophecy,
and by accepting his words as prophecy which were
fulfilled, the Jews became guilty of a terrible crime.
This prophecy sealed their doom, they made the
awful decision to kill Jesus.

They put a price on His head. The high priest was
given the authoriy to offer a reward to whoever
would give them the information needed to make
Jesus' arrest.