Fr. Timothy Gallagher discusses the Ninth Rule:
"There are three principal reasons why we find ourselves desolate.
The first is because of our being tepid, lazy or negligent in our spiritual exercises; and so through our faults, spiritual consolation withdraws from us.
The second, to try us and see how much we are and how much we let ourselves out in His service and praise without such great pay of consolation and great graces.
The third, to give us true acquaintance and knowledge, that we may interiorly feel that it is not ours to get or keep great devotion, intense love, tears, or any other spiritual consolation, but that all is the gift and grace of God our Lord, and that we may not build a nest in a thing not ours, raising our intellect into some pride or vainglory, attributing to us devotion or the other things of the spiritual consolation."