New International Version
After Jesus had gone indoors, his disciples asked him privately, "Why couldn't we drive it out?"

English Standard Version
And when he had entered the house, his disciples asked him privately, “Why could we not cast it out?”

Berean Study Bible
After Jesus had gone into the house, His disciples asked Him privately, “Why couldn’t we drive it out?”

King James Bible
And when he was come into the house, his disciples asked him privately, Why could not we cast him out?

New American Standard Bible
When He came into the house, His disciples began questioning Him privately, "Why could we not drive it out?"

American Standard Version
And when he was come into the house, his disciples asked him privately, How is it that we could not cast it out?

Darby Bible Translation
And when he was entered into the house, his disciples asked him privately, Wherefore could not we cast him out?

Douay-Rheims Bible
And when he was come into the house, his disciples secretly asked him: Why could not we cast him out?

English Revised Version
And when he was come into the house, his disciples asked him privately, saying, We could not cast it out.

Young's Literal Translation
And he having come into the house, his disciples were questioning him by himself -- 'Why were we not able to cast it forth?'

Mark 9:28 Bible Hub
Mark 9:28 Bible Apps
Mark 9:28 Open Bible