John Chrysostom
Catena Aurea · Lukasevangelium 18
And he spake a parable unto them to this end, that men ought always to pray, and not to faint; Saying, There was in a city a judge, which feared not God, neither regarded man: And there was a widow in that city; and she came unto him, saying, Avenge me of mine adversary. And he would not for a while: but afterwards he said within himself, Though I fear not God, nor regard man; Yet because this widow troubleth me, I will avenge her, lest by her continual coming she weary me. And the Lord said, Hear what the unjust judge saith. And shall not God avenge his own elect, which cry day and night unto him, though he bear long with them? I tell you that he will avenge them speedily. Nevertheless when the Son of man cometh, shall he find faith on the earth?
He who hath redeemed thee, hath shewn thee what He would have thee do. He would have thee be instant in prayer, He would have thee ponder in thy heart the blessings thou art praying for, He would have thee ask and receive what His goodness is longing to impart. He never refuses His blessings to them that pray, but rather stirs men up by His mercy not to faint in praying. Gladly accept the Lord’s encouragement: be willing to do what He commands, not to do what He forbids. Lastly, consider what a blessed privilege is granted thee, to talk with God in thy prayers, and make known to Him all thy wants, while He though not in words, yet by His mercy, answers thee, for He despiseth not petitions, He tires not but when thou art silent.