Here, the desire is with respect to three persons in the unity of the Trinity. When we love the Trinity in and through the heart of Jesus, our Savior, who is the Savior of all men, our love necessarily takes on this dimension. We cannot stop at ourselves nor at a limited horizon. I desire to accomplish perfectly your will and to arrive at the degree of glory that you have prepared for me in your Kingdom. This is for hope.
Obedience is food for hope.
It allows it to grow. We should all have the desire to make our hope grow. This desire which is linked to that of accomplishing perfectly the will of the Father has us aspire to the degree of glory he has prepared for us in his Kingdom. In a word, I desire to be a saint, but I feel my powerlessness and I ask you, O my God, to be yourself, that you yourself be my holiness. But so that he be our holiness we must desire to be a saint.