Luther suggests that after meditation on the Scripture, you should pray through each petition of the Lord’s Prayer, paraphrasing and personalising each one using your own needs and concerns.
The value of this exercise is manifold. It addresses one of the great practical difficulties of prayer-distracting thoughts…The exercise of elaborating on the Lord’s Prayer commands the full mental faculty, and this helps greatly with the problem of giving God full attention.
Praying the Great Prayer forces us to use all the full language and basic forms of prayer…Praying the Lord’s Prayer forces us to look for things to thank and praise God for in our dark times, and it presses us to repent and seek forgiveness during times of prosperity and success. It disciplines us to bring every part of our lives to God.
Praying the Lord’s Prayer…brings boldness and comfort, and, of course, warms up the heart to slide right into the most passionate prayer for our most urgent concerns.
Timothy J. Keller, Prayer: Experiencing Awe and Intimacy with God (United Kingdom: Hodder & Stoughton General Division, 2014), 93 – 94.