Jewish nationalistic fervor was running hot. Judas had a bag of money. The sword was still an option. It was, after all, just six days until Passover and every good Jew knew what that meant. America has a few celebrations like that of its own.
Most nations do.
God destroyed the Egyptians. The Israelites danced for joy. But, you know, a funny thing has happened. Today more and more of us can no longer imagine God rejoicing over the death of Pharaoh or his army or any other army or any group of people. A lot has changed since the death of Jesus.