Matthew 17:19

Then the disciples came to Jesus privately, and said: Why were we not able to cast him out?

Mark 4:10

And when he was alone, those who were about him, with the twelve, asked him the meaning of the parable.

Mark 9:28

And when he had come into the house, his disciples asked him privately: Why were we not able to cast it out?

Treasury of Scripture Knowledge

Summary

Then came the disciples to Jesus apart, and said, Why could not we cast him out?

General references

Bible References

General references

Mark 4:10
And when he was alone, those who were about him, with the twelve, asked him the meaning of the parable.
Mark 9:28
And when he had come into the house, his disciples asked him privately: Why were we not able to cast it out?