This was a result to what Christians do to him. They changed his life which he was never acceptable in Vince. Also, Christians people do his life miserable when they took his daughter and his money. So, this was the time to take a revenge. He rejected to show mercy.
Christians people want from him to show mercy and be as a human, when they said, “We expect you to be filled with pity and passion, please show some mercy.”
In contrast of that, they didn’t show mercy entire his life. Portia’s famed speech when she asked him for mercy. it appeared as a height of moral to Christian audience because she argues by Christian context and ignored his moral and religious position.
One of the most quotes that provide the hypocrisy of the Christians, when shylock asked Christians to show their humanity. Also , he displays Christian characters whom always talking about their mercy and values at the same time they alienate him in order that he's different because of Jewish. “If a Jew wrong a Christian, what is his humility? Revenge. If a Christian wrong a Jew, what should his sufferance be by Christian example? Why, revenge! The villainy you teach me