Luke 18:1

We know that perseverance in prayer is a rare and difficult attainment; and it is a manifestation of our unbelief that, when our first prayers are not successful, we immediately throw away not only hope, but all the ardor of prayer. But it is an undoubted evidence of our Faith, if we are disappointed of our wish, and yet do not lose courage. Most properly, therefore, does Christ recommend to his disciples to persevere in praying.

The parable which he employs, though apparently harsh, was admirably fitted to instruct his disciples, that they ought to be importunate in their prayers to God the Father, till they at length draw from him what He would otherwise appear to be unwilling to give. Not that by our prayers we gain a victory over God, and bend him slowly and reluctantly to compassion, but because the actual facts do not all at once make it evident that he graciously listens to our prayers. In the parable Christ describes to us a widow, who obtained what she wanted from an unjust and cruel judge, because she did not cease to make earnest demands. The leading truth conveyed is, that God does not all at once grant assistance to his people, because he chooses to be, as it were, wearied out by prayers; and that, however wretched and despicable may be the condition of those who pray to him, yet if they do not desist from the uninterrupted exercise of prayer, he will at length regard them and relieve their necessities.

The parties between whom the comparison is drawn are, indeed, by no means equal; for there is a wide difference between a wicked and cruel man and God, who is naturally inclined to mercy. But Christ intended to assure believers that they have no reason to fear lest their persevering entreaties to the Father of mercy should be refused, since by importunate supplication they prevail on men who are given to cruelty. The wicked and iron-hearted judge could not avoid yielding at length, though reluctantly, to the earnest solicitations of the widow: how then shall the prayers of believers, when perseveringly maintained, be without effect? If exhaustion and weakness are felt by us when we give way after a slight exertion, or if the ardor of prayer languishes because God appears to lend a deaf ear, let us rest assured of our ultimate success, though it may not be immediately apparent. Entertaining this conviction, let us contend against our impatience, so that the long delay may not induce us to discontinue our prayers.