Luke 18:1
Then Jesus told them a parable about their need to pray at all times and not lose heart:

Psalm 31:22
In my alarm I said, "I am cut off from Your sight!" But You heard my plea for mercy when I called to You for help.

Lamentations 3:8, 18, 54-58
Even when I cry out and plead for help, He shuts out my prayer. . . .

Jonah 2:2-8
saying: "In my distress I called to the LORD and He answered me. From the belly of Sheol I called for help, and You heard my voice. . . .

James 4:3
And when you do ask, you do not receive, because you ask with wrong motives, that you may squander it on your pleasures.

James 5:11
See how blessed we consider those who have persevered. You have heard of Job's perseverance and have seen the outcome from the Lord. The Lord is full of compassion and mercy.