Matthew 17:21

However, this kind goeth not out, but by prayer and fasting.

Mark 9:29

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

1 Kings 17:20-21

And he cried to the LORD, and said, O LORD my God, hast thou also brought evil upon the widow with whom I sojourn, by slaying her son?

Daniel 9:3

And I set my face to the Lord God, to seek by prayer and supplications, with fasting, and sackcloth, and ashes:

Matthew 12:45

Then goeth he, and taketh 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. Even so shall it be also to this wicked generation.

Acts 13:2-3

As they ministered to the Lord, and fasted, the Holy Spirit said, Separate for me Barnabas and Saul, for the work to which I have called them.

Acts 14:23

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

1 Corinthians 7:5

Defraud ye not one the other, except with consent for a time, that ye may give yourselves to fasting and prayer; and come together again, that Satan may not tempt you for your incontinence.

2 Corinthians 11:27

In weariness and painfulness, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness.

Ephesians 6:18

Praying always with all prayer and supplication in the Spirit, and watching for this purpose with all perseverance and supplication for all saints;

Treasury of Scripture Knowledge

Summary

Howbeit this kind goeth not out but by prayer and fasting.

Bible References

This

Matthew 12:45
Then goeth he, and taketh 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. Even so shall it be also to this wicked generation.

But

1 Kings 17:20
And he cried to the LORD, and said, O LORD my God, hast thou also brought evil upon the widow with whom I sojourn, by slaying her son?
Daniel 9:3
And I set my face to the Lord God, to seek by prayer and supplications, with fasting, and sackcloth, and ashes:
Mark 9:29
And he said to them, This kind can come forth by nothing, but by prayer and fasting.
Acts 13:2
As they ministered to the Lord, and fasted, the Holy Spirit said, Separate for me Barnabas and Saul, for the work to which I have called them.
Acts 14:23
And when they had ordained for them elders in every church, and had prayed with fasting, they commended them to the Lord, on whom they believed.
1 Corinthians 7:5
Defraud ye not one the other, except with consent for a time, that ye may give yourselves to fasting and prayer; and come together again, that Satan may not tempt you for your incontinence.
2 Corinthians 11:27
In weariness and painfulness, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness.
Ephesians 6:18
Praying always with all prayer and supplication in the Spirit, and watching for this purpose with all perseverance and supplication for all saints;