Mark 9:29

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

Matthew 12:45

Then goeth he and taketh 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. So shall it be also to this wicked generation.

Matthew 17:20

And Jesus said to them, Because of your unbelief. For verily I say to you, If ye have faith as a grain of mustardseed, ye shall say to this mountain, Remove hence to yonder place, and it shall remove, and nothing shall be impossible to you.

Luke 11:26

Then goeth he and taketh to him seven other spirits more wicked than himself; and entering in they dwell there; and the last state of that man becometh worse than the first.

Acts 9:40-41

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

Acts 14:23

And when they had ordained them presbyters in every church, and had prayed with fasting, they commended them to the Lord, on whom they had believed.

1 Corinthians 9:27

But I keep under my body, and bring it into subjection, lest by any means, after having preached to others, I myself should become a reprobate.

2 Corinthians 6:5

in necessities, in distresses, In stripes, in imprisonments, in tumults, in labours, in watchings, in fastings;

2 Corinthians 11:27

In labour and toil, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness.

2 Corinthians 12:8

Concerning this, I besought the Lord thrice, that it might depart from me.

Ephesians 6:18

which is the word of God, Praying alway by the Spirit with all prayer and supplication, and watching thereunto with all perseverance and supplication for all the saints,

James 5:15

And the prayer of faith shall save the sick, and the Lord shall raise him up, and if he have 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 goeth he and taketh 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. So shall it be also to this wicked generation.
Luke 11:26
Then goeth he and taketh to him seven other spirits more wicked than himself; and entering in they dwell there; and the last state of that man becometh worse than the first.

By prayer

Matthew 17:21
Howbeit this kind goeth not out, but by prayer and fasting.
Acts 9:40
But Peter, having put them all out, kneeled down and prayed; and turning to the body said, Tabitha, arise. And she opened her eyes, and seeing Peter, sat up.
2 Corinthians 12:8
Concerning this, I besought the Lord thrice, that it might depart from me.
Ephesians 6:18
which is the word of God, Praying alway by the Spirit with all prayer and supplication, and watching thereunto with all perseverance and supplication for all the saints,
James 5:15
And the prayer of faith shall save the sick, and the Lord shall raise him up, and if he have committed sins, they shall be forgiven him.

Fasting

Acts 14:23
And when they had ordained them presbyters in every church, and had prayed with fasting, they commended them to the Lord, on whom they had believed.
1 Corinthians 9:27
But I keep under my body, and bring it into subjection, lest by any means, after having preached to others, I myself should become a reprobate.
2 Corinthians 6:5
in necessities, in distresses, In stripes, in imprisonments, in tumults, in labours, in watchings, in fastings;
2 Corinthians 11:27
In labour and toil, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness.