I was listening to another sermon by Andrew Farley on his website, on the subject of prayer.
He mentioned that he had recently discovered that the Lord's prayer (Matthew 6:9-13) were actually very short versions of some of the very long prayers that the Jews would pray over and over back then.
This makes a ton of sense if you look at Jesus' words just before the famous prayer that he told his disciples to pray:
"And when you pray, do not heap up empty phrases as the Gentiles do, (those who don't know God) for they think that they will be heard for their many words. Do not be like them, for your Father in heaven knows what you need before you ask him. Pray then like this:
'Our Father in heaven, hallowed be your name.
Your kingdom come,
your will be done,
on earth as it is in heaven.
Give us this day our daily bread, and forgive us our debts, as we also have forgiven our debtors.
And lead us not into temptation, but deliver us from evil' ".