Someone brought a mute and demon-possessed man to Jesus (Matthew 9:32), and He cast the demon out,
“And when the demon was cast out, the mute spoke. And the multitudes marveled, saying, ‘It was never seen like this in Israel!’ But the Pharisees said, ‘He casts out demons by the ruler of the demons’” (Matthew 9:33–34).
The multitudes saw what was done, and could only come to one conclusion, that nothing like this had ever happened in Israel before.
The Pharisees did not necessarily disagree with that, but they sought to explain away this phenomenon as a work of the devil. What do you think of the miracles of Jesus?