References posted are from the New American Standard Bible (NASB)
“Whenever you fast, do not put on a gloomy face as the hypocrites do, for they neglect their appearance so that they will be noticed by men when they are fasting. Truly I say to you, they have their reward in full. But you, when you fast, anoint your head and wash your face so that your fasting will not be noticed by men, but by your Father who is in secret; and your Father who sees what is done in secret will reward you. (Matthew 6:16-18)
Then the disciples of John *came to Him, asking, “Why do we and the Pharisees fast, but Your disciples do not fast?” And Jesus said to them, “The attendants of the bridegroom cannot mourn as long as the bridegroom is with them, can they? But the days will come when the bridegroom is taken away from them, and then they will fast. (Matthew 9:14-15)
And He also told this parable to some people who trusted in themselves that they were righteous, and viewed others with contempt: “Two men went up into the temple to pray, one a Pharisee and the other a tax collector. The Pharisee stood and was praying this to himself: ‘God, I thank You that I am not like other people: swindlers, unjust, adulterers, or even like this tax collector. I fast twice a week; I pay tithes of all that I get.’ But the tax collector, standing some distance away, was even unwilling to lift up his eyes to heaven, but was beating his breast, saying, ‘God, be merciful to me, the sinner!’ I tell you, this man went to his house justified rather than the other; for everyone who exalts himself will be humbled, but he who humbles himself will be exalted.” (Luke 18:9-14)
Until the day was about to dawn, Paul was encouraging them all to take some food, saying, “Today is the fourteenth day that you have been constantly watching and going without eating, having taken nothing. Therefore I encourage you to take some food, for this is for your preservation, for not a hair from the head of any of you will perish.” Having said this, he took bread and gave thanks to God in the presence of all, and he broke it and began to eat. All of them were encouraged and they themselves also took food. All of us in the ship were two hundred and seventy-six persons. (Acts 27:33-37)
Now on the twenty-fourth day of this month the sons of Israel assembled with fasting, in sackcloth and with dirt upon them. The descendants of Israel separated themselves from all foreigners, and stood and confessed their sins and the iniquities of their fathers. While they stood in their place, they read from the book of the law of the Lord their God for a fourth of the day; and for another fourth they confessed and worshiped the Lord their God. (Nehemiah 9:1-3 NASB)
“Even now,” declares the LORD, “return to me with all your heart, with fasting and weeping and mourning. Tear your hearts, not your garments.” (Joel 2:12)
And he (Paul) was three days without sight, and neither ate nor drank. (Acts 9:9)
When I (Moses) went up to the mountain to receive the tablets of stone, the tablets of the covenant which the Lord had made with you, then I remained on the mountain forty days and nights; I neither ate bread nor drank water. (Deuteronomy 9:9)
So he arose and ate and drank, and went in the strength of that food forty days and forty nights to Horeb, the mountain of God. (1 Kings 19:8)
“Go, assemble all the Jews who are found in Susa, and fast for me; do not eat or drink for three days, night or day. I and my maidens also will fast in the same way. And thus I will go in to the king, which is not according to the law; and if I perish, I perish.” (Esther 4:16)
“Then you will call, and the Lord will answer;
You will cry, and He will say, ‘Here I am.’ (Isaiah 58:9a)
“And the Lord will continually guide you,
And satisfy your desire in scorched places,
And give strength to your bones;
And you will be like a watered garden,
And like a spring of water whose waters do not fail.
“Those from among you will rebuild the ancient ruins;
You will raise up the age-old foundations;
And you will be called the repairer of the breach,
The restorer of the streets in which to dwell. (Isaiah 58:11-12)
“Is this not the fast which I choose,
To loosen the bonds of wickedness,
To undo the bands of the yoke,
And to let the oppressed go free
And break every yoke?
“Is it not to divide your bread with the hungry
And bring the homeless poor into the house;
When you see the naked, to cover him;
And not to hide yourself from your own flesh? (Isaiah 58:6-7)
If you remove the yoke from your midst,
The pointing of the finger and speaking wickedness,
And if you give yourself to the hungry
And satisfy the desire of the afflicted… (Isaiah 58:9b-10a)
Isaiah 58
Nehemiah 1
Jonah 3
2 Chronicles 20
More Scriptures to Pray During Fasting
My soul thirsts for God, the living God… (Psalm 42:2a)
Come and hear, all who fear God, And I will tell of what He has done for my soul. I cried to Him with my mouth, And He was extolled with my tongue. If I regard wickedness in my heart, The Lord will not hear; But certainly God has heard; He has given heed to the voice of my prayer. Blessed be God, Who has not turned away my prayer Nor His loving kindness from me. (Psalm 66:16-20)
If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness. (1 John 1:9)
But I say, walk by the Spirit, and you will not carry out the desire of the flesh. For the flesh sets its desire against the Spirit, and the Spirit against the flesh; for these are in opposition to one another, so that you may not do the things that you please. (Galatians 5:16-17)