Mark 9:28

28 After Yeshua had gone indoors, his talmidim asked him privately, "Why couldn't we drive it out?"

Mark 9:28 Meaning and Commentary

Mark 9:28

And when he was come into the house
Perhaps into the man's house whose child he had healed, or into some other in these parts, for the sake both of retirement and refreshment:

his disciples asked him privately, why could not we cast him out?
The nine disciples, who were particularly concerned in this matter, fearing they had lost the power of casting out devils, conferred upon them, inquired of Jesus, when he was alone, why they could not cast the demon out of the child, when they had ejected unclean spirits out of many others; (See Gill on Matthew 17:19).

Mark 9:28 In-Context

26 Shrieking and throwing the boy into a violent fit, it came out. The boy lay there like a corpse, so that most of the people said he was dead.

27 But Yeshua took him by the hand and raised him to his feet, and he stood up.

28 After Yeshua had gone indoors, his talmidim asked him privately, "Why couldn't we drive it out?"

29 He said to them "This is the kind of spirit that can be driven out only by prayer."

30 After leaving that place, they went on through the Galil. Yeshua didn't want anyone to know,