Luke 18:1-7

ALSO [Jesus] told them a parable to the effect that they ought always to pray and not to turn coward (faint, lose heart, and give up). He said, In a certain city there was a judge who neither reverenced and feared God nor respected or considered man. And there was a widow in that city who kept coming to him and saying, Protect and defend and give me justice against my adversary. And for a time he would not; but later he said to himself, Though I have neither reverence or fear for God nor respect or consideration for man, Yet because this widow continues to bother me, I will defend and protect and avenge her, lest she give me intolerable annoyance and wear me out by her continual coming or at the last she come and rail on me or assault me or strangle me. Then the Lord said, Listen to what the unjust judge says! And will not [our just] God defend and protect and avenge His elect (His chosen ones), who cry to Him day and night? Will He defer them and delay help on their behalf?