Persistent Widow; Luke 18:1-8

Church History: 1Then Jesus told his disciples a parable to show them that they should always pray and not give up. 2He said: "In a certain town there was a judge who neither feared God nor cared about men. 3And there was a widow in that town who kept coming to him with the plea, 'Grant me justice against my adversary.' 4"For some time he refused. But finally he said to himself, 'Even though I don't fear God or care about men, 5yet because this widow keeps bothering me, I will see that she gets justice, so that she won't eventually wear me out with her coming!' " 6And the Lord said, "Listen to what the unjust judge says. 7And will not God bring about justice for his chosen ones, who cry out to him day and night? Will he keep putting them off? 8I tell you, he will see that they get justice, and quickly. However, when the Son of Man comes, will he find faith on the earth?"

There is no duty in Christianity, the practice of which our Savior pressed upon us more frequently than this duty of prayer. To encourage his disciples, (and us in them,) to fervency, urgency, and perseverance in this duty, he presents here the parable of an unjust judge, who was overcome by a pleading widow, to do her justice contrary to his own inclination.
From here our Savior argues, that if pleading will prevail with a sinful man, to grant petitions offered to him; how much more prevalent will such pleading be with the infinitely good God, to relieve the needs of those who devoutly plead for his help. And the force of the argument lies thus: "The judge in the parable was an inferior and subordinate judge, was an unrighteous and unjust judge, was a merciless and hard hearted judge; and yet, upon her pleading, he avenged her: how much more will the sovereign and supreme Judge, the holy and righteous, the merciful and compassionate Judge of all the earth, hear and help his praying people, and be the just Avenger of those that fear him"
Prayer, or a liberty of making our requests known to God, is an inestimable favor and privilege. He that considers the nature of God, and the nature of man, cannot question it: God is a being of infinite fullness and perfection; a self- sufficient, and an all-sufficient good; and man an indigent, helpless, dependent creature, full of wants, and obnoxious to dangers.
Prayer is not only an inestimable privilege, but an indispensable duty. So solicitous is God for our welfare and happiness, that he makes our privilege our duty, by the authority of his command; so that we are at once ungrateful to God, and unjust to ourselves, in the most exalted degree, if we do not pray unto him, and spread our wants before him.5