1 Timothy 2:8

I desire, then, that the men pray in every place, lifting up holy hands, without wrath and doubting.

James 5:16

Confess your trespasses to one another, and pray for one another, that ye may be healed. The earnest prayer of a righteous man availeth much.

Luke 18:1

And he spoke a parable to them to show that they ought to pray always, and not be fainthearted:

Treasury of Scripture Knowledge

Summary

And it came to pass, when Moses held up his hand, that Israel prevailed: and when he let down his hand, Amalek prevailed.

General references

Bible References

General references

Luke 18:1
And he spoke a parable to them to show that they ought to pray always, and not be fainthearted:
1 Timothy 2:8
I desire, then, that the men pray in every place, lifting up holy hands, without wrath and doubting.
James 5:16
Confess your trespasses to one another, and pray for one another, that ye may be healed. The earnest prayer of a righteous man availeth much.