A Treasury of Prayers5
“A good Christian acquires his mettle, with the help of grace, in the training-ground of prayer. But prayer, our life-giving nourishment, is not limited to one form alone. Our heart will and an habitual expression in words, in the vocal prayers taught us by God himself - the Our Father - or by his angels or the Hail Mary. On other occasions, we will use the time-proven words that have expressed the piety of millions of our brothers in the faith: prayers from the liturgy or lex orandi; or others whose source is the love of an ardent heart, like the antiphons to our Lady: Sub tuum praesidium; Memorare; Salve, Regina....
“There will be other occasions on which all we’ll need will be two or three words, said with the quickness of a dart, jaculata: ejaculatory prayers, aspirations that we learn from a careful reading of Christ’s life: ‘Lord if you will, you can make me clean’ (Mt 8:2). ‘Lord, you know all things, you know that I love you’ (Jn 21:17). ‘Lord, I do believe, but help my unbelief (Mk 9:23), strengthen my faith. ‘Lord, I am not worthy’ (Mk 8:8). ‘My Lord and my God’ (John 20:28)... or other short phrases, full of a action, that spring from the soul’s intimate fervor and correspond to the different circumstances of each day.”
The Blessed Josemaria Escriva, Christ Is Passing By, n. 119.