The scriptures speak often of the importance of both prayer and fasting. Below are some passages to look up concerning these aspects of the Christian life:
David therefore besought God for the child; and David fasted, and went in a lay all night upon the ground.
And when Ahab heard those words, he rent his clothes, and put sackcloth upon his flesh, and fasted and lay in sackcloth, and went about dejectedly.
So the realm of Jehoshaphat was quiet, for his God gave him rest round about.
Then I proclaimed a fast there, at the river Ahava, that we might humble ourselves before our God, to seek from him a straight way for ourselves, our children, and all our goods. 22For I was ashamed to ask the king for a band of soldiers and horsemen to protect us against the enemy on our way; since we had told the king, “The hand of our God is for good upon all that seek him, and the power of his wrath is against all that forsake him.” 23So we fasted and besought our God for this, and he listened to our entreaty.
And in every province, wherever the king’s command and his decree came, there was great mourning among the Jews, with fasting and weeping and lamenting, and most of them lay in sackcloth and ashes.
And now, O Lord God and King, God of Abraham, spare thy people; for the eyes of our foes are upon us to annihilate us, and they desire to destroy the inheritance that has been thine from the beginning. Do not neglect thy portion, which thou didst redeem for thyself out of the land of Egypt. Hear my prayer, and have mercy upon thy inheritance; turn our mourning into feasting, that we may live and sing praise to thy name, O Lord; do not destroy the mouth of those who praise thee.
But I, when they were sick – I wore sackcloth, I afflicted myself with fasting I prayed with head bowed on my bosom.
In those days I, Daniel, was mourning for three weeks. I ate no delicacies, no meat or wine entered my mouth, nor did I anoint myself at all, for the full three weeks.
And when you fast, do not look dismal, like the hyprocrites, for they disfigure their faces that their fasting may be seen by men. Truly, I say to you, they have their reward. But when you fast, anoint your head and wash your face, 18that your fasting may not be seen by men but by your Father who is in secret; and your Father who sees in secret will reward you.
Then Jesus was led up by the Spirit into the wilderness to be tempted by the devil. And he fasted forty days and forty nights, and afterward he was hungry.
And Jesus, full of the Holy Spirit, returned from the Jordan, and was led by the Spirit 2for forty days in the wilderness, tempted by the devil. And He ate nothing in those days; and when they were ended, He was hungry. The devil said to Him, “If you are the Son of God, command this stone to become bread.” And Jesus answered him, “It is written, ‘Man shall not live by bread alone.’” And the devil took Him up, and showed Him all the kingdoms of the world in a moment of time, 6and said to Him, “To you I will give all this authority and their glory; for it has been delivered to me, and I give it to whom I will. If you, then, will worship me, it shall be all yours.” And Jesus answered him, “It is written, ‘He will give his angels charge of you, to guard you,’ and ‘On their hands they will bear you up, lest you strike your foot against a stone.’”
And Jesus answered him, “It is said, ‘You shall not tempt the Lord your God.’”
And when the devil had ended every temptation; he departed from him until an opportune time.
And there was a prophetess, Anna, the daughter of Phanuel, of the tribe of Asher; she was of a great age, having lived with her husband seven years from her virginity, and as a widow till she was eighty-four. She did not depart from the temple, worshiping with fasting and prayer night and day. And coming up at that very hour she gave thanks to God, and spoke of him to all who were looking for the redemption of Jerusalem.
Saul arose from the ground; and when his eyes were opened, he could see nothing; so they led him by the hand and brought him into Damascus. And for three days he was without sight, and neither ate nor drank.