Luke 18: 1 - 8
1 And he told them a parable, to the effect that they ought always to pray and not lose heart.
2 He said, "In a certain city there was a judge who neither feared God nor regarded man;
3 and there was a widow in that city who kept coming to him and saying, `Vindicate me against my adversary.'
4 For a while he refused; but afterward he said to himself, `Though I neither fear God nor regard man,
5 yet because this widow bothers me, I will vindicate her, or she will wear me out by her continual coming.'"
6 And the Lord said, "Hear what the unrighteous judge says.
7 And will not God vindicate his elect, who cry to him day and night? Will he delay long over them?
8 I tell you, he will vindicate them speedily. Nevertheless, when the Son of man comes, will he find faith on earth?"

EWTN