Since, however, the Lord, the Foreseer of human necessities,Matthew 6:8 said separately, after delivering His Rule of Prayer, “Ask, and ye shall receive;”Matthew 7:7 Luke 11:9 and since there are petitions which are made according to the circumstances of each individual; our additional wants have the right—after beginning with the legitimate and customary prayers as a foundation, as it were—of rearing an outer superstructure of petitions, yet with remembrance of the Master’s precepts.
De Oratione
Chapter 10. We May Superadd Prayers of Our Own to the Lord’s Prayer
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Trans. S. Thelwall, The Ante-Nicene Fathers, Volume III, 1885. Public domain.