“Compassion makes a man look into himself, and recognize his faults, his feebleness in virtues and in the worship of God, his lukewarmness, his laziness, his many failings, the time he has wasted and his present imperfection in moral and other virtues; all this makes a man feel true pity and compassion for himself.
Further, compassion marks the errors and disorders of our fellow-creatures, how little they care for their God and their eternal blessedness, their ingratitude for all the good things which God has done for them, and the pains He suffered for their sake; how they are strangers to virtue, unskilled and unpractised in it, but skilful and cunning in every wickedness; how attentive they are to the loss and gain of earthly goods, how careless and reckless they are of God, of eternal things, and their eternal bliss. When he marks this, a good man is moved to compassion for the salvation of all men.
Such a man will also regard with pity the bodily needs of his neighbours, and the manifold sufferings of human nature; seeing men hungry, thirsty, cold, naked, sick, poor, and abject; the manifold oppressions of the poor, the grief caused by loss of kinsmen, friends, goods, honour, peace; all the countless sorrows which befall the nature of man. These things move the just to compassion, so that they share the sorrows of all…
From this compassion springs generosity; for none can be generous in a supernatural way, with faithfulness and goodwill towards all, save him who has a pitiful heart—though a man may often show generosity to a particular person without charity and without supernatural generosity.”
John Ruusbroec (1293-1381) in The Spiritual Espousals, a.k.a. The Adornment of the Spiritual Marriage, excerpt from Chapter XVIII On Compassion and Chapter XIX On Generosity.
Father in Heaven, thank you for your generosity toward me, despite my feebleness, my errors and disorders, and my ingratitude. Form in me a heart full of compassion and pity for the broken and hurting and for those whose only attention is on the loss and gain of earthly goods. By your Holy Spirit, keep my heart filled with compassion so that faithfulness, goodwill, kindness, and generosity may flow from you through me to those around me. Hear my prayer in the name of Jesus. Amen.
As God’s chosen ones, holy and beloved, clothe yourselves with compassion, kindness, humility, meekness, and patience. Bear with one another and, if anyone has a complaint against another, forgive each other; just as the Lord has forgiven you, so you also must forgive. Above all, clothe yourselves with love, which binds everything together in perfect harmony. Colossians 3:12-14