Mark 9:18

18 When the spirit takes hold of him, it throws him to the ground. He foams at the mouth. He grinds his teeth. And his body becomes stiff. I asked your disciples to drive out the spirit. But they couldn't do it."

Mark 9:18 Meaning and Commentary

Mark 9:18

And wheresoever he taketh him
The spirit, or devil, whether it be near fire, or water, whatsoever danger, or dangerous place:

he teareth him;
or throws him into it, or dashes him against it; or inwardly racks, tortures, and convulses him:

and he foameth;
at the mouth, like one that is mad:

and gnasheth with his teeth;
through the excessive pain he is in:

and pineth away;
his flesh is withered, dried up, and consumed away. This was the sad deplorable case this child was in, who was his father's only child, and therefore his health and life were very desirable: now he further observes to Christ, saying,

and I spake to thy disciples that they should cast him out, and
they could not.
Christ being absent, he entreated the disciples, who had power against unclean spirits, to cast them out; that they would make use of it, and dispossess this dumb and evil spirit; and who did make trial to cast him out, but were not able to effect it; (See Gill on Matthew 17:16).

Mark 9:18 In-Context

16 "What are you arguing with them about?" Jesus asked.

17 A man in the crowd answered. "Teacher," he said, "I brought you my son. He is controlled by a spirit. Because of this, my son can't speak anymore.

18 When the spirit takes hold of him, it throws him to the ground. He foams at the mouth. He grinds his teeth. And his body becomes stiff. I asked your disciples to drive out the spirit. But they couldn't do it."

19 "You unbelieving people!" Jesus replied. "How long do I have to stay with you? How long do I have to put up with you? Bring the boy to me."

20 So they brought him. As soon as the spirit saw Jesus, it threw the boy into a fit. He fell to the ground. He rolled around and foamed at the mouth.