John 11:43-48, 53

Then with a loud voice Jesus shouted with authority: “Lazarus! Come out of the tomb!” Then in front of everyone, Lazarus, who had died four days earlier, slowly hobbled out—he still had grave clothes tightly wrapped around his hands and feet and covering his face! Jesus said to them, “Unwrap him and let him loose.” From that day forward many of those who had come to visit Mary believed in him, for they had seen with their own eyes this amazing miracle! But a few went back to inform the Pharisees about what Jesus had done. So the Pharisees and the chief priests called a special meeting of the High Council and said, “So what are we going to do about this man? Look at all the great miracles he’s performing! If we allow him to continue like this, everyone will believe in him. And the Romans will take action and destroy both our country and our people!”

So from that day on, they were committed to killing Jesus.