Mark 9:18

18 Whenever it seizes him, it throws him to the ground. He foams at the mouth, grinds his teeth, and goes stiff as a board. I told your disciples, hoping they could deliver him, but they couldn't."

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 He asked, "What's going on? What's all the commotion?"

17 A man out of the crowd answered, "Teacher, I brought my mute son, made speechless by a demon, to you.

18 Whenever it seizes him, it throws him to the ground. He foams at the mouth, grinds his teeth, and goes stiff as a board. I told your disciples, hoping they could deliver him, but they couldn't."

19 Jesus said, "What a generation! No sense of God! How many times do I have to go over these things? How much longer do I have to put up with this? Bring the boy here."

20 They brought him. When the demon saw Jesus, it threw the boy into a seizure, causing him to writhe on the ground and foam at the mouth.