Luke 18:1

Jesus told his disciples a parable to show them that they should always pray and never despair.

Colossians 4:2

Devote yourselves to prayer. Give your whole mind to it, and also offer thanksgiving;

Romans 12:12

Rejoicing in your hope; steadfast under persecution; persevering in prayer;

Ephesians 6:18

Pray in spirit at all times. Be intent upon this, with unwearying perseverance and supplication for all Christ's People- -

1 Thessalonians 5:17

Never cease to pray;

Philippians 4:6

Do not be anxious about anything; but under all circumstances, by prayer and entreaty joined with thanksgiving, make your needs known to God.

Luke 21:36

Be on the watch at all times, and pray that you may have strength to escape all that is destined to happen, and to stand in the presence of the Son of Man."

Luke 11:5-9

Jesus also said to them: "Suppose that one of you who has a friend were to go to him in the middle of the night and say 'Friend, lend me three loaves,

2 Corinthians 4:1

Therefore, since it is by God's mercy that we are engaged in this ministry, we do not lose heart.

Galatians 6:9

Let us never tire of doing right, for at the proper season we shall reap our harvest, if we do not grow weary.

Colossians 4:12

Epaphras, who is one of yourselves, sends you his greeting. He is a servant of Christ Jesus, and is always most earnest in your behalf in his prayers, praying that you may stand firm, with a matured faith and with a sure conviction of all that is in accordance with God's will.

Hebrews 12:3-5

Weigh well the example of him who had to endure such opposition from 'men who were sinning against themselves,' so that you should not grow weary or faint-hearted.

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;

General references

Bible References

And not

Galatians 6:9
Let us never tire of doing right, for at the proper season we shall reap our harvest, if we do not grow weary.
Hebrews 12:3
Weigh well the example of him who had to endure such opposition from 'men who were sinning against themselves,' so that you should not grow weary or faint-hearted.

General references

Luke 11:10
For he that asks receives, he that searches finds, and to him that knocks the door shall be opened.