TSK · Mark 1:25

He healed many who were sick with various diseases, and cast out many demons. He didn't allow the demons to speak, because they knew him.

When Jesus saw that a multitude came running together, he rebuked the unclean spirit, saying to him, "You mute and deaf spirit, I command you, come out of him, and never enter him again!"

Demons also came out from many, crying out, and saying, "You are the Christ, the Son of God!" Rebuking them, he didn't allow them to speak, because they knew that he was the Christ.