The Jews therefore answered him, "What sign do you show us, seeing that you do these things?"
The Jews objected to Jesus’ interfering with the temple and challenged him to perform some miracle as evidence that he had authority from God to act in such a way. Jesus referred to the sign of his resurrection as his authority, but no one understood its meaning at the time. Jesus knew that because of his zeal for the purity of God’s house the Jews would eventually kill him, but he would rise from the dead and bring in a new era of life for the world (John 2:17-22).