Rejoice always, pray without ceasing, give thanks in all circumstances; for this is the will of God in Christ Jesus for you.
Are we then ceaselessly to bend our knees, to lie prostrate, or to lift up our hands? Is this what He meant in saying: Pray without ceasing? Even if we admit that we pray in this fashion, I do not believe that we can do so all the time.
Yet there is another, interior kind of prayer without ceasing, namely, the desire of the heart. Whatever else you may be doing, if you but fix your desire on God’s Sabbath rest, your prayer will be ceaseless. Therefore, if you wish to pray without ceasing, do not cease to desire. The constancy of your desire will itself be the ceaseless voice of your prayer.