Mark 9:29

And he said to them: This kind can go out by nothing, but by prayer and fasting.

Matthew 12:45

Then he goes and takes with himself seven other spirits more wicked than himself; and they enter in and dwell there. And the last state of that man is worse than the first. So shall it be with this wicked generation.

Matthew 17:20

And Jesus said to them: Because of your unbelief. For verily I say to you, If you have faith like a grain of mustard-seed, you shall say to this mountain, Be removed from this place to that, and it shall be removed: and nothing shall be impossible for you.

Luke 11:26

Then he goes and takes with him seven other spirits, more wicked than himself, and they enter in, and dwell there: and the last state of that man is worse than the first.

Acts 9:40-41

But Peter put them all out, and kneeled down and prayed; and turning to the body, he said: Tabitha, arise. And she opened her eyes; and when she saw Peter, she sat up.

Acts 14:23

And when they had appointed elders for them in every church, with prayer and fasting, they commended them to the Lord, on whom they believed.

1 Corinthians 9:27

but I put my body under severe discipline, and bring it into subjection, lest, after I have preached to others, I myself should be rejected.

2 Corinthians 6:5

in stripes, in prisons,, in commotions, in labors, in watchings, in fastings;

2 Corinthians 11:27

in weariness and in toil, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness:

2 Corinthians 12:8

With regard to this, I three times entreated the Lord that it might leave me;

Ephesians 6:18

praying with all prayer and supplication, at all times, in the Spirit; and to this end being watchful in all perseverance, and supplication for all the saints:

James 5:15

And the prayer of faith shall save the sick; and the Lord will raise him up. And if he has committed sins, they shall be forgiven him.

Treasury of Scripture Knowledge

Summary

And he said unto them, This kind can come forth by nothing, but by prayer and fasting.

Bible References

This

Matthew 12:45
Then he goes and takes with himself seven other spirits more wicked than himself; and they enter in and dwell there. And the last state of that man is worse than the first. So shall it be with this wicked generation.
Luke 11:26
Then he goes and takes with him seven other spirits, more wicked than himself, and they enter in, and dwell there: and the last state of that man is worse than the first.

By prayer

Matthew 17:21
But this kind does not go out but by prayer and fasting.
Acts 9:40
But Peter put them all out, and kneeled down and prayed; and turning to the body, he said: Tabitha, arise. And she opened her eyes; and when she saw Peter, she sat up.
2 Corinthians 12:8
With regard to this, I three times entreated the Lord that it might leave me;
Ephesians 6:18
praying with all prayer and supplication, at all times, in the Spirit; and to this end being watchful in all perseverance, and supplication for all the saints:
James 5:15
And the prayer of faith shall save the sick; and the Lord will raise him up. And if he has committed sins, they shall be forgiven him.

Fasting

Acts 14:23
And when they had appointed elders for them in every church, with prayer and fasting, they commended them to the Lord, on whom they believed.
1 Corinthians 9:27
but I put my body under severe discipline, and bring it into subjection, lest, after I have preached to others, I myself should be rejected.
2 Corinthians 6:5
in stripes, in prisons,, in commotions, in labors, in watchings, in fastings;
2 Corinthians 11:27
in weariness and in toil, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness: