“I am convinced that when a Christian rightly prays the Lord’s Prayer at any time or uses any portion of it as he may desire, his praying is more than adequate. What is important for a good prayer is not many words, as Christ says in Matthew 6 [:7], but rather a turning to God frequently and with heartfelt longing, and doing so without ceasing [I Thess. 5:17].”

Luther, Martin. “Personal Prayer Book” (1522) Luther’s Works Vol. 43. (Philadelphia: Fortress Press, 1968), page 12.