“He reminds us that if we want to obtain something from God, we must ask relentlessly and never give up. At the same time, He repeatedly reminds us that our petitions may not correspond to the will of God. This is why the Lord’s Prayer, which He Himself commanded to us, has the words, “Thy will be done”. This is the most important prayer which should conclude all our petitions.”
(Metropolitan Hilarion Alfeyev, Christ’s teaching on prayer)