Luke 18:1

He also taught them by a parable how they ought always to pray and never to lose heart.

Luke 18:7

"And will not God see justice done to his elect who are crying unto him day and night, even if he seems to delay helping them?

Philippians 4:6-7

Do not worry about anything; but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God;

Treasury of Scripture Knowledge

Summary

O LORD, to thee will I cry: for the fire hath devoured the pastures of the wilderness, and the flame hath burned all the trees of the field.

Bible References

To thee

Luke 18:1
He also taught them by a parable how they ought always to pray and never to lose heart.
Philippians 4:6
Do not worry about anything; but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God;