Expositor's Bible Commentary Commentary Mark 9:25

"And when Jesus saw that a multitude came running together, he rebuked the unclean spirit, saying unto him, Thou dumb and deaf spirit, I command thee, come out of him, and enter no more into him." — Mark 9:25 (ASV)

The crowd “running to the scene” was probably additional to the one already present (v.14). Jesus, wanting to avoid as much as possible further publicity, spoke to the demon before additional people arrived on the scene, ordering him to come out and stay out for good.