17 A man in the crowd answered, “Teacher, I brought you my son, who is possessed by a spirit that has robbed him of speech.

Read Mark 9:17 Using Other Translations

And one of the multitude answered and said, Master, I have brought unto thee my son, which hath a dumb spirit;
And someone from the crowd answered him, "Teacher, I brought my son to you, for he has a spirit that makes him mute.
One of the men in the crowd spoke up and said, “Teacher, I brought my son so you could heal him. He is possessed by an evil spirit that won’t let him talk.