Matthew 26:3-4, 15

Then the chief priests and the elders of the people gathered in the courtyard of the [elegant home of the Jewish] high priest, whose name was Caiaphas, and plotted together to arrest Jesus by stealth and kill Him.

and said, “What are you willing to give me if I hand Jesus over to you?” And they weighed out thirty pieces of silver. [Ex 21:32; Zech 11:12]