Mark 9:28

28 After Jesus had gone indoors, his disciples asked him privately, “Why couldn’t we drive it out?”

Mark 9:28 in Other Translations

KJV
28 And when he was come into the house, his disciples asked him privately, Why could not we cast him out?
ESV
28 And when he had entered the house, his disciples asked him privately, "Why could we not cast it out?"
NLT
28 Afterward, when Jesus was alone in the house with his disciples, they asked him, “Why couldn’t we cast out that evil spirit?”
MSG
28 After arriving back home, his disciples cornered Jesus and asked, "Why couldn't we throw the demon out?"
CSB
28 After He went into a house, His disciples 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 The spirit shrieked, convulsed him violently and came out. The boy looked so much like a corpse that many said, “He’s dead.”
27 But Jesus took him by the hand and lifted him to his feet, and he stood up.
28 After Jesus had gone indoors, his disciples asked him privately, “Why couldn’t we drive it out?”
29 He replied, “This kind can come out only by prayer.”
30 They left that place and passed through Galilee. Jesus did not want anyone to know where they were,

Cross References 1

Scripture quoted by permission.  Quotations designated (NIV) are from THE HOLY BIBLE: NEW INTERNATIONAL VERSION®.  NIV®.  Copyright © 1973, 1978, 1984, 2011 by Biblica.  All rights reserved worldwide.