Luke 18:1, 6-8

Now He was telling them a parable to show that at all times they ought to pray and not to lose heart

And the Lord said, “Hear what the unrighteous judge *said; now, will not God bring about justice for His elect who cry to Him day and night, and will He delay long over them? I tell you that He will bring about justice for them quickly. However, when the Son of Man comes, will He find faith on the earth?”