1. Christ's Passion, as said before, is especially calculated to cause devotion. But from dwelling on it there follows a certain affliction of soul: Remember my poverty ... the wormwood and the gall[93]—that is, the Sacred Passion; and then follows: I will be mindful, and remember, and my soul shall languish within me.
In meditation on the Passion of Christ there is food for sadness—viz., the thought of the sins of men, and to take these away Christ had need to suffer. But there is also food for joy—viz., the thought of God's merciful kindness towards us in providing us such a deliverance.
2. Again, devotion principally consists in the interior sacrifice of the heart: A sacrifice to God is an afflicted spirit;[94] consequently affliction, rather than pleasure or joy, is the outcome of devotion.
But the soul which is on the one hand saddened because of its shortcomings in this present life, is on the other hand delighted at the thought of the goodness of God and of the hope of Divine assistance.
3. Lastly, S. Gregory of Nyssa says[95]: "Just as laughter proceeds from joy, so are sorrow and groaning signs of sadness." But out of devotion some burst into tears.
Yet tears spring not from sadness alone, but also from a certain tenderness of feeling: and especially is this the case when we reflect on something that, while pleasant, has in it a certain admixture of sadness; thus men are wont to weep from loving affection when they recover their children or others dear to them whom they had thought lost. And it is in this sense that tears spring from devotion.
Cajetan: Notice the proof here afforded that those are not devout persons who are habitually sad and gloomy, and who cannot mingle with others without getting into difficulties or dissolving into tears. For devout folk are cheerful, and are full of joy in their souls; and this not solely by reason of the principal cause, as is stated in the text, but also by reason of a secondary cause—the thought, namely, of their own failings. For the sadness of devout folk is according to God, and joy accompanies it; whence S. Augustine's remark: "Let a man grieve, but let him rejoice at his grief."[96] Therefore it is that we read of the Saints that they were joyful and bright; and rightly so, for they had begun upon earth their "heavenly conversation"[97] (on 2. 2. 82. 4).
S. Augustine: For Thee do I yearn, Justice and Innocence, Beautiful and Fair in Thy beauteous light that satisfies and yet never sates! For with Thee is repose exceedingly and life without disquiet! He that enters into Thee enters into the joy of his Lord; he shall know no fear, and in the Best shall be best. But I have deserted Thee and have wandered away, O Lord, my God! Too far have I wandered from Thee, the Steadfast One, in my youth, and I have become to myself a very land of want! (Confessions, II. x.).