Then the disciples came to Jesus in private and asked him, “Why couldn't we drive the demon out?”
Jesus gave a command to the demon, and it went out of the boy, and at that very moment he was healed.
“It was because you do not have enough faith,” answered Jesus. “I assure you that if you have faith as big as a mustard seed, you can say to this hill, ‘Go from here to there!’ and it will go. You could do anything!”
When Jesus was alone, some of those who had heard him came to him with the twelve disciples and asked him to explain the parables.
After Jesus had gone indoors, his disciples asked him privately, “Why couldn't we drive the spirit out?”