Mark 9:28

Then, ¹  after he went into the house, his disciples asked him privately, “Why couldn’t we cast it out?”

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

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

Afterward, when Jesus was alone in the house with his disciples, they asked him, "Why couldn’t we cast out that evil spirit?"

After arriving back home, his disciples cornered Jesus and asked, "Why couldn't we throw the demon out?"

And when he had gone into the house, his disciples said to him privately, Why were we unable to send it out?

When he had entered the house, his disciples asked him privately, "Why could we not cast it out?"

And when He had come into the house, His disciples asked Him privately, "Why could we not cast it out?"

Then, ¹  after he went into the house, his disciples asked him privately, “Why couldn’t we cast it out?”

¹ tn Here καί (kai) has been translated as “then” to indicate the implied sequence of events within the narrative.