Luke 18:1

And he spoke a parable unto them to this end, that it behooves us always to pray and not faint,

Colossians 4:2

Persevere in prayer and watch in the same with thanksgiving,

Romans 12:12

rejoicing in hope, patient in tribulation, constant in prayer,

Ephesians 6:18

praying always with all prayer and supplication in the Spirit and watching in this with all perseverance and supplication for all the saints

1 Thessalonians 5:17

Pray without ceasing.

Philippians 4:6

Be anxious for nothing, but in every thing by prayer and supplication with thanksgiving, let your requests be made known unto God.

Psalm 55:16-17

As for me, I will call upon God, and the LORD shall save me.

Luke 21:36

Watch ye therefore and pray always that ye may be accounted worthy to escape all these things that shall come to pass and to stand before the Son of man.

Genesis 32:24-26

And Jacob was left alone, and a man wrestled with him until the breaking of the day.

Job 27:8-10

For what is the hope of the hypocrite, though he has stolen much, when God takes away his soul?

Psalm 27:13

I had fainted unless I had believed to see the goodness of the LORD in the land of the living.

Psalm 65:2

O thou that hearest prayer, unto thee shall all flesh come.

Psalm 86:3

Be merciful unto me, O Lord, for I cry unto thee daily.

Psalm 102:17

He shall have regarded the prayer of those who are alone and destitute and not despised their prayer.

Genesis 32:9-12

And Jacob said, O God of my father Abraham and God of my father Isaac, the LORD who said unto me, Return unto thy country and to thy kindred, and I will deal well with thee.

Psalm 142:5-7

I cried unto thee, O LORD; I said, Thou art my hope and my portion in the land of the living.

Jeremiah 29:12

Then ye shall call upon me, and ye shall walk in my ways and pray unto me, and I will hearken unto you.

Jonah 2:7

When my soul fainted within me, I remembered the LORD, and my prayer entered in unto thee in thy holy temple.

Luke 11:5-9

And he said unto them, Which of you shall have a friend and shall go unto him at midnight and say unto him, Friend, lend me three loaves;

2 Corinthians 4:1

Therefore seeing we have this ministry, according to the mercy we have received, we fault not,

Galatians 6:9

And let us not be weary in well doing, for in due season we shall reap if we faint not.

Colossians 4:12

Epaphras, who is one of you, a slave of Christ, salutes you, always labouring fervently for you in prayers, that ye may stand firm, perfect and fulfilled in all the will of God.

Hebrews 12:3-5

For consider him that endured such contradiction of sinners against himself lest ye be wearied in your souls and faint.

Treasury of Scripture Knowledge

Summary

And he spake a parable unto them to this end, that men ought always to pray, and not to faint;

Bible References

And not

Psalm 27:13
I had fainted unless I had believed to see the goodness of the LORD in the land of the living.
Jonah 2:7
When my soul fainted within me, I remembered the LORD, and my prayer entered in unto thee in thy holy temple.
Galatians 6:9
And let us not be weary in well doing, for in due season we shall reap if we faint not.
Hebrews 12:3
For consider him that endured such contradiction of sinners against himself lest ye be wearied in your souls and faint.

General references

Genesis 18:31
And he said, Behold now, I have taken upon me to speak unto the Lord; peradventure there shall be twenty found there. And he said, I will not destroy it for twenty's sake.
Exodus 17:11
And it came to pass, when Moses held up his hand, that Israel prevailed; but when he let down his hand, Amalek prevailed.
Luke 11:10
For every one that asks receives; and he that seeks finds; and to him that knocks it shall be opened.