Luke 18:1

And he spoke also a parable to them to the purport that they should always pray and not faint,

Colossians 4:2

Persevere in prayer, watching in it with thanksgiving;

Romans 12:12

As regards hope, rejoicing: as regards tribulation, enduring: as regards prayer, persevering:

Ephesians 6:18

praying at all seasons, with all prayer and supplication in the Spirit, and watching unto this very thing with all perseverance and supplication for all the saints;

1 Thessalonians 5:17

pray unceasingly;

Philippians 4:6

Be careful about nothing; but in everything, by prayer and supplication with thanksgiving, let your requests be made known to God;

Psalm 55:16-17

As for me, unto God will I call; and Jehovah will save me.

Luke 21:36

Watch therefore, praying at every season, that ye may be accounted worthy to escape all these things which are about to come to pass, and to stand before the Son of man.

Genesis 32:24-26

And Jacob remained alone; and a man wrestled with him until the rising of the dawn.

Job 27:8-10

For what is the hope of the ungodly, when God cutteth him off, when +God taketh away his soul?

Psalm 27:13

Unless I had believed to see the goodness of Jehovah in the land of the living ...!

Psalm 65:2

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

Psalm 86:3

Be gracious unto me, O Lord; for unto thee do I call all the day.

Psalm 102:17

He will regard the prayer of the destitute one, and not despise their prayer.

Genesis 32:9-12

And Jacob said, God of my father Abraham, and God of my father Isaac, Jehovah, who saidst unto me: Return into thy country and to thy kindred, and I will do thee good,

Psalm 142:5-7

I cried unto thee, Jehovah; I said, Thou art my refuge, my portion in the land of the living.

Jeremiah 29:12

And ye shall call upon me, and ye shall go and pray unto me, and I will hearken unto you;

Jonah 2:7

When my soul fainted within me, I remembered Jehovah; And my prayer came in unto thee, Into thy holy temple.

Luke 11:5-9

And he said to them, Who among you shall have a friend, and shall go to him at midnight and say to him, Friend, let me have three loaves,

2 Corinthians 4:1

Therefore, having this ministry, as we have had mercy shewn us, we faint not.

Galatians 6:9

but let us not lose heart in doing good; for in due time, if we do not faint, we shall reap.

Colossians 4:12

Epaphras, who is one of you, the bondman of Christ Jesus, salutes you, always combating earnestly for you in prayers, to the end that ye may stand perfect and complete in all the will of God.

Hebrews 12:3-5

For consider well him who endured so great contradiction from sinners against himself, that ye be not weary, fainting 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
Unless I had believed to see the goodness of Jehovah in the land of the living ...!
Jonah 2:7
When my soul fainted within me, I remembered Jehovah; And my prayer came in unto thee, Into thy holy temple.
Galatians 6:9
but let us not lose heart in doing good; for in due time, if we do not faint, we shall reap.
Hebrews 12:3
For consider well him who endured so great contradiction from sinners against himself, that ye be not weary, fainting in your minds.

General references

Genesis 18:31
And he said, Behold now, I have ventured to speak with the Lord. Perhaps there may be twenty found there. And he said, I will not destroy it for the twenty's sake.
Exodus 17:11
And it came to pass when Moses raised 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 will be opened.