“And he spake a parable unto them to this end, that men ought always to pray, and not to faint;”
Luke 18:1 — Greek Interlinear
Church Fathers on Luke 18:1
Our Lord having spoken of the trials and dangers which were coming, adds immediately afterward their remedy, namely, constant and earnest prayer.
He who has redeemed you, has shown you what He would have you do. He would have you be instant in prayer, He would have you ponder in your heart the blessings you are praying for, He would have you 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,…
We should say that he is always praying, and faints not, who never fails to pray at the canonical hours. Or all things which the righteous man does and says towards God, are to be counted as praying.