Luke 18:1

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

Colossians 4:2

Continue in prayer, and watch in it 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 thus with all perseverance and supplication for all saints;

1 Thessalonians 5:17

Pray without ceasing.

Philippians 4:6

Be anxious for nothing; but in everything 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 therefore, and pray always, that you 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 there wrestled a man with him until the breaking of the day.

Job 27:8-10

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

Psalm 27:13

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

Psalm 65:2

O you that hears prayer, unto you shall all flesh come.

Psalm 86:3

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

Psalm 102:17

He will regard the prayer of the destitute, and not despise 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 your country, and to your kindred, and I will deal well with you:

Psalm 142:5-7

I cried unto you, O LORD: I said, you are my refuge and my portion in the land of the living.

Jeremiah 29:12

Then shall you call upon me, and you shall go 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 came in unto you, into your 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, as we have received mercy, we faint 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 servant of Christ, greets you, always laboring fervently for you in prayers, that you may stand perfect and complete in all the will of God.

Hebrews 12:3-5

For consider him that endured such hostility of sinners against himself, lest you be wearied and faint in your minds.

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 would have 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 came in unto you, into your 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 hostility of sinners against himself, lest you be wearied and faint in your minds.

General references

Genesis 18:31
And he said, Behold now, I have taken upon me to speak unto the Lord: Suppose 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: and 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.