106 Compassionate those who are bound with chains, as though bound with them. Comfort those in sorrow; for, “It is better to go into the house of mourning than into the house of rejoicing.” From the one is gained the merit of a good work, from the other a lapse into sin. Lastly, in the one case you still hope for the reward, in the other you have already received it. Feel with those who are afflicted as if also afflicted with them.
Source: Letters (New Advent)