Matthew 17:21
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Mark 9:29
And he said to them, This kind can go out by nothing, except by prayer.
Matthew 12:45
Then it goeth and taketh with it seven other spirits more wicked than itself, and they enter in, and dwell there; and the last state of that man becometh worse than the first. So will it be also with this wicked generation.
Acts 13:2-3
And while they were ministering to the Lord, and fasting, the Holy Spirit said, Set apart for me Barnabas and Saul for the work to which I have called them.
Acts 14:23
And having appointed for them elders in every church, they prayed with fasting, and commended them to the Lord, in whom they believed.
1 Corinthians 7:5
Defraud not one another, except by agreement for a time, that ye may have a season for prayer; and be together again, that Satan may not tempt you through your incontinence.
2 Corinthians 11:27
by weariness and painfulness, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness.
Ephesians 6:18
praying with all prayer and entreaty at all times in the Spirit; and watching to this end with all perseverance and entreaty for all the saints,